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KIWI design K4 Boost Comfort Battery Head Strap Accessories for Meta/Oculus Quest 3/3S, Dual Charge the VR Headset and Battery Strap in 2.5h
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Return this item for free
Free returns are available for the shipping address you chose. For a full refund with no deduction for return shipping, you can return the item for any reason in new and unused condition.
Learn more about free returns.- Go to your orders and start the return
- Select the return method
- Ship it!
Purchase options and add-ons
Brand | KIWI design |
Colour | White |
Special feature | Lightweight |
Connectivity technology | Bluetooth |
Included components | Head strap, battery, power adapter |
Compatible devices | Meta Quest 3/3S |
Specific uses for product | Play, 360 degree video watching |
Age range (description) | Teen, Adult |
Operating system | Meta Quest OS |
Field of view | 52 Degrees |
About this item
- 【Extended Playtime with Enhanced Battery】Enjoy uninterrupted gaming with up to three hours of additional battery life; play longer without worrying about running out of power; tailored to your usage scenarios for maximum performance
- 【Dual Fast Charging】 Two Times Faster Power up both K4 Boost and Quest 3S/3 simultaneously with DualBoost Charging system; fully charged in just 2.5 hours; 45W adapter(not included)delivers 25W output to Quest 3S/3; reach 65% charge(Both HMD&K4 Boost) in 60 minutes for 2.5 hours of playtime
- 【Comfortable and Balanced Design】Game longer with enhanced comfort; enlarged rear support and thickened padding reduce facial pressure; better weight balance reduces strain on the head and neck for extended play
- 【Safe and Reliable Materials】Built with high-quality battery cells and advanced PCB boards; multiple layers of protection including NTC and UL certifications; materials rigorously tested in TUV lab for safety and durability
- 【Easy Wear and Quick Adjustment】Easily put on and take off your headset with a 52-degree damping hinge; quick adjustment dial ensures a perfect fit every time; share the fun instantly with family and friends
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KIWI design

93% positive ratings from 1K+ customers

5K+ recent orders from this brand
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Sustainability features
This product has sustainability features recognised by trusted certifications.Carbon emissions from the lifecycle of this product were measured, reduced and offset.As certified byEach carbon-free certified product goes through a cradle-to-grave assessment to determine the product’s carbon footprint. The carbon emissions associated with the product are reduced where possible, and remaining carbon emissions are offset with third-party verified carbon reduction projects in renewable energy, energy efficiency and forestry.
From the brand

KIWI design
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Since 2015, KIWI design has successfully driving the VR scene. Armed with over 100 patents and remarkable product lineup, we're proud to co-brand with Meta and actively participate in the MFM program.
Your feedback is a source of fuel for us! Crafting products that electrify users and gamers worldwide is our forte. To enrich the most distinctive user experience, we are dedicated to build a brand that offers top-tier products with tempered design.
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Product Description




KIWI design Accessories Universe
![]() K4 Boost | ![]() Meta Quest 3 head strap | ![]() P4 case | ![]() Controller Grips Update | ![]() F4 Facial Iterface | ![]() Link Cable QL105 | ![]() Quest 3 Charging Dock | |
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Customer Reviews
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4.6 out of 5 stars 1,185
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4.7 out of 5 stars 1,492
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4.0 out of 5 stars 100
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4.5 out of 5 stars 816
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4.1 out of 5 stars 166
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4.5 out of 5 stars 1,289
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4.4 out of 5 stars 825
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Price
| £79.99£79.99 | £39.99£39.99 | £39.99£39.99 | £24.99£24.99 | £19.99£19.99 | £14.99£14.99 | £67.99£67.99 |
Compatible with
| Quest 3S/3 | Quest 3S/3 | Quest 3S/3/2/vision pro | Quest 3S/3 | Quest 3S | Quest 3S/3/2/1/Pro | Quest 3S/3/2/pro |
Size
| 26*24.5*7 cm | 22,5*23,5*7 cm | 22*12*14cm | 15*10*5,5 cm | 13,5*9*4,5 cm | 18*9,5*4,8 cm | 30,4*21,6*10,75 cm |
Weight
| 805g | 236g | 448g | 165g | 90g | 290,3g | 1784g |
Special Feature 1
| DualBoost Power | New Strap Design | Protect the Meta quest 3S | Protect the controller | Unmatched Comfort | Fits most head straps | Meta Co-branded Product |
Special Feature 2
| Fast Charge | New Comfort Level | Durability | Stay in sync always | Hygienically Safe | Premium aluminum head | Charge to various VR headsets |
Special Feature 3
| 3 Level Protection | 52° Flippable hinge | Perfect Fit, Modern Style | Swift battery replacement | Ergonomic Design | Flexible free movement | 16 RGB light models |
Special Feature 4
| 52° Flippable pivot | All-round cushion wrapped | Easy Carry | Adjustable for different size | Dependable Materials | Enhanced tinplate casing | Save Space |
What's in the box?
Product details
- Batteries : 2 Lithium Polymer batteries required. (included)
- Language : English
- Product Dimensions : 8 x 25 x 25.8 cm; 362.87 g
- Date First Available : 23 May 2024
- Manufacturer : Shenzhen Hongjiantou Technology Co., Ltd.
- ASIN : B0D4TGY2F2
- Item model number : QS02B
- Country of origin : China
- Guaranteed software updates until : unknown
- Delivery information:: We cannot deliver certain products outside mainland UK ( Details). We will only be able to confirm if this product can be delivered to your chosen address when you enter your delivery address at checkout.
- Best Sellers Rank: 1,066 in PC & Video Games (See Top 100 in PC & Video Games)
- Customer reviews:
Customer reviews
Customer Reviews, including Product Star Ratings, help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyses reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers find the VR headset strap comfortable, particularly for long gaming sessions, and appreciate its good build quality and value for money. The strap is easy to install and adjust, with one customer noting it's a huge improvement over the standard strap. They like the battery life extension feature, with one mentioning no low battery warnings, and find it not too heavy, with one noting it balances the Meta Quest 3 perfectly.
AI Generated from the text of customer reviews
Customers find the VR headset comfortable, particularly during long gaming sessions, with one customer noting that the padding is softer.
"...So much more comfortable than strap that comes with quest 3. It’s nearly as comfy as my PSVR2 and that’s saying a lot...." Read more
"...The added comfort is immediately noticeable—the padding is much softer, and it distributes the weight more evenly, making long gaming sessions way..." Read more
"...This is a lot more comfortable to use, spent a few hours using it before writing this just to compare and the difference is immediately noticeable...." Read more
"Very comfortable. Battery pack isn’t heavy and charges a good amount. Easy to install...." Read more
Customers appreciate the VR headset's battery life, noting that it significantly extends usage time, with one customer reporting no low battery warnings.
"...Price is good too. You get what you pay for. Update: battery is good and this strap has been a life saver . KIWI products rock!!..." Read more
"...The battery feature is a game-changer as well. Having the extra power pack integrated into the head strap extends playtime significantly, and I do..." Read more
"...Included non-removable battery was almost fully charged when it came, when connected and charging, it charges both the battery in the head strap and..." Read more
"...The battery is great, and extra 2-3 hours, which for me is plenty in VR. The extra weight at the back helps balance the quest on your face...." Read more
Customers find that the headset strap fits well and is easily adjustable, with one customer noting the simple dial adjuster for tightening.
"Easy to swap for old strap. Well made and fits perfectly. Not too heavy and the hidden tightening dial is a good addition...." Read more
"...The adjustable design fits perfectly, and I love that it feels more secure on my head. The battery feature is a game-changer as well...." Read more
"...Head strap can also be easily adjusted for a nice fit while using to keep it secure...." Read more
"...It’s so comfortable, very easy to adjust to my head size and shape. Has made putting the VR on and off my face super easy...." Read more
Customers appreciate the build quality of the VR headset, with one mentioning that the head strap at the top feels premium.
"Easy to swap for old strap. Well made and fits perfectly. Not too heavy and the hidden tightening dial is a good addition...." Read more
"...Easy to install. The head strap at the top feels premium and functions much better than the stock one...." Read more
"Item is comfortable to wear and seems well built." Read more
"...All of them are top quality. This gives an extra couple of hours playing the to each session." Read more
Customers find the VR headset strap to be good value for the cost.
"...Price is good too. You get what you pay for. Update: battery is good and this strap has been a life saver . KIWI products rock!!..." Read more
"...It’s definitely worth the investment!" Read more
"...Very good value for the cost, will make your VR experience last longer along with more comfort in the process." Read more
"Very comfortable. Battery pack isn’t heavy and charges a good amount. Easy to install...." Read more
Customers like the head strap, with one noting it's a huge improvement over the standard one, and another describing it as a life saver.
"...Update: battery is good and this strap has been a life saver . KIWI products rock!! Will be buying more...." Read more
"Really comfortable and a huge improvement on the standard strap. Really easy to fit and battery life has not let me down yet." Read more
"This is a great strap that comfortable and doubles battery life." Read more
"Best head strap..." Read more
Customers find the headset strap easy to install, with one mentioning it attaches well to the Quest 3.
"...not at all overly heavy with the additional battery, was easy to attach to the Quest 3 and all connects together perfectly...." Read more
"...Battery pack isn’t heavy and charges a good amount. Easy to install...." Read more
"...with this one as it fits well, it's comfortable, and ready to set up without any trouble. Happy to recommend and would buy this again" Read more
"...’s so comfortable not used it that much for battery yet but it’s good to plug in while your on the go, would 109% recommend" Read more
Customers appreciate the headset's weight, finding it not too heavy, with one customer noting that it balances the Meta Quest 3 perfectly.
"Easy to swap for old strap. Well made and fits perfectly. Not too heavy and the hidden tightening dial is a good addition...." Read more
"...Didn’t feel any discomfort while using the whole time, not at all overly heavy with the additional battery, was easy to attach to the Quest 3 and..." Read more
"Very comfortable. Battery pack isn’t heavy and charges a good amount. Easy to install...." Read more
"Good comfortable fit as the battery pack balances the weight distribution out so it's not all front loaded with the weight of the headset...." Read more
Reviews with images

Great addition
Top reviews from United Kingdom
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- Reviewed in the United Kingdom on 2 December 2024Easy to swap for old strap. Well made and fits perfectly. Not too heavy and the hidden tightening dial is a good addition. So much more comfortable than strap that comes with quest 3. It’s nearly as comfy as my PSVR2 and that’s saying a lot. Would highly recommend this product. As for the battery I dunno how it will last so I’ll see after regular use. Price is good too. You get what you pay for.
Update: battery is good and this strap has been a life saver . KIWI products rock!! Will be buying more. I know you can get cheaper but remember you get what you pay for and quality is not cheap
- Reviewed in the United Kingdom on 26 April 2025The Kiwi Design K4 head strap is a huge improvement over the default strap that comes with the Meta Quest 3. The added comfort is immediately noticeable—the padding is much softer, and it distributes the weight more evenly, making long gaming sessions way more comfortable. The adjustable design fits perfectly, and I love that it feels more secure on my head.
The battery feature is a game-changer as well. Having the extra power pack integrated into the head strap extends playtime significantly, and I don’t have to worry about my Meta Quest 3 running out of battery so quickly. It’s a fantastic upgrade overall and really enhances the VR experience.
Highly recommend this head strap if you’re looking to improve comfort and battery life. It’s definitely worth the investment!
- Reviewed in the United Kingdom on 4 January 2025Recently bought the Meta Quest 3, had already read the issues with the standard head strap that comes with it being uncomfortable.
With that in mind, I wanted a more premium head strap and the extra battery power to be able to use it longer. This is a lot more comfortable to use, spent a few hours using it before writing this just to compare and the difference is immediately noticeable. Didn’t feel any discomfort while using the whole time, not at all overly heavy with the additional battery, was easy to attach to the Quest 3 and all connects together perfectly. Head strap can also be easily adjusted for a nice fit while using to keep it secure.
Included non-removable battery was almost fully charged when it came, when connected and charging, it charges both the battery in the head strap and the battery in the Quest 3 at the same time which is great. It doesn’t come with any charging cables or additional plugs, not an issue though as you can just use the plug and USB-C cable that comes with the Quest 3. After a few hours of use the battery on the Quest 3 was still full and also had 1 of 4 lights on the head strap battery still available.
Overall if you’re after something comfortable that also has the extra battery power then I have no issue at all recommending this. Very good value for the cost, will make your VR experience last longer along with more comfort in the process.
- Reviewed in the United Kingdom on 22 January 2025Maybe I have a weird head?
But this didn’t fit as well as the official pro strap from Meta.
The battery is great, and extra 2-3 hours, which for me is plenty in VR.
The extra weight at the back helps balance the quest on your face.
Just dont forget to unplug after you finish, otherwise it’ll drain the battery
- Reviewed in the United Kingdom on 9 June 2025Very comfortable. Battery pack isn’t heavy and charges a good amount. Easy to install. The head strap at the top feels premium and functions much better than the stock one.
The only issue I have is that I can’t really lay down on my back anymore and use the quest in comfort. But that’s more so an issue of me not thinking about the battery packs position before buying.
- Reviewed in the United Kingdom on 20 June 2025I don’t know how I coped before this strap on my quest 3. It’s so comfortable, very easy to adjust to my head size and shape. Has made putting the VR on and off my face super easy. Game play is so much more enjoyable and battery does last for hours. Get one you will not be disappointed as I can thoroughly recommend. Super happy.
- Reviewed in the United Kingdom on 22 January 2025I bought this after doing a lot of research as to why I'm getting serious pressure points from the original quest strap. It just didn't feel comfy and didnt feel like it fitted snug. With this head strap the headset feels fitted and doesnt move when being used on the energetic, fast paced games. Its very adaptable as you can dial the size in at the back of the strap, make the top strap shorter or longer (its just a velcro strap so easy to alter) and the battery really boosts the battery time on the headset. I'd say it doubles it. The lenses can steam up when I first put it on but that soon settles or I wipe the lenses and it's good to go. I find I can wear the meta quest 3 headset for longer now with this strap attached, it's so much more comfortable. Happy customer.
- Reviewed in the United Kingdom on 22 March 2025So having bought a Quest 3 headset, my first purchase was always going to be a decent strap with a battery pack to extend the useful life of a session of user.
I looked at this plus the H4 as well as the other well known brand, but opted for this. I'm sure the H4 would be just as good but I'm very happy with this one as it fits well, it's comfortable, and ready to set up without any trouble.
Happy to recommend and would buy this again
Top reviews from other countries
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Loris.bonnetReviewed in France on 27 June 2025
5.0 out of 5 stars Presque parfait !
-La sangle élite avec batterie dernière génération de Kiwi Design est franchement incroyable, je dirais la meilleure du marcher actuel.
-Mais, j'ai remarqué un point négatif, le fait qu'elle charge le casque même éteint et avec 100% de batterie du casque. Ce qui peux être dérangeant mais on s'y habitue. Il faut juste charger le casque après son utilisation pour enlever ce "paramètre"
-Bien sur, je retient les points positifs d'abord ! La sangle est confortable, légère, charge rapidement, belle autonomie et j'en passe...
Ce qui donne pleins de points positifs, surtout pour le prix qui est franchement pile poile dans les budget moyens.
-En conclusion, la sangle est presque parfaite, mais je laisse les 5 étoiles parce que le points négatifs n'est pas super important.
- JKReviewed in Sweden on 24 November 2024
5.0 out of 5 stars Better than Halo strap
For me this perfect balance between comfort and stability. I like the Quest 3 original strap for stability, I can move my head around in fast games and keep a sharp sweeet spot, it does not move. But it’s awfully uncomfortable after 10 minutes. I tried a Kiwi Design H4 Halo strap, and while it’s very comfortable and fixes that issue, it introduces a new one for me as it’s so vobbly! In faster games I quickly lose my sharpness sweet spot (I use prescription inserts) because it moves around so much and it just does not feel like I get the ultimate picture quality. I am also aftraid to move my head around and that does not feel natural.
Well I am glad to say this K4 Boost with battery solves both issues and is the perfect balance between comfort and stability! It’s way more comfortable than the original strap, but without sacrificing the stability! So feels much more natural than a Halo for me. Don’t belive all those ”Halo is better!” on the internet. Maybe if you are a youtuber and use it more than 8h a day, but if you are a regular user and want to get a one or two hours of gameplay after work, this is just perfect!
Also battery is perfect, not a problem I can’t change them like in Bobo variants. It gives double amount of battery time and that’s plenty for me, I would never play VR more than 2 hours anyway without a break. And then you can fast charge it if you want, I have not tried fast charging but should work pretty quickly.
- mattReviewed in Australia on 24 June 2025
5.0 out of 5 stars Great value and comfort, double battery life
Heaps more comfortable than the standard strap. Gaming with my brother online my headset was still on full charge thanks to the boost strap (boost strap was onnits last bar) when his was running out of power so it solidly doubles playtime. Through charging is a great feature too and its more than solid enough mounting for active games
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Sir TobyReviewed in Germany on 6 October 2024
5.0 out of 5 stars Vergleich "Kiwi Design K4 Komfort" und KIWI Design K4 Boost Komfort"
Für meine Meta Quest 3 habe ich nach einer sinnvollen und bequemen Kopfhalterung gesucht, um das unsägliche Textilband der Basisausstattung zu ersetzen. Vom Originalzubehör des Herstellers wird in diversen Internetforen und Youtube-Videos abgeraten, weil es im freien Zubehörmarkt deutlich bessere Alternativen gibt. So bin ich bei meiner Suche auf KIWI Design gestoßen und war begeistert. Aussehen und Verarbeitung sind tadellos und fügen sich perfekt ins Erscheinungsbild der Meta Quest-Reihe ein. Auf den ersten Blick wirkt das Angebot verwirrend, denn aktuell sind sowohl die ältere Elite-Reihe als auch die gerade neu erschienene K4 Komfort-Reihe im Handel. Hauptsächlich unterscheidet sich die neue K4 Komfort-Reihe darin, dass das Verstellrad für den Kopfumfang nicht mehr wie bei der Elite-Reihe außen angesetzt, sondern im Kopfbügel integriert ist, was einen großen Vorteil darstellt, wenn man das VR-Headset im Liegen verwendet oder auch nur den Kopf im Sessel anlehnen will.
Meine Empfehlung geht klar zu den neuen K4 Komfort-Modellen „KIWI Design K4 Komfort Strap“ und „KIWI Design K4 Boost Komfort Strap“ (mit Akku).
Ich besitze beide und konnte sie entsprechend miteinander vergleichen. Dazu ein paar Angaben, denn die Gewichte in der Produktbeschreibung sind falsch und die Akkukapazität fehlt komplett.
Das K4 hat ein Gewicht von 234g, das K4 Boost wiegt 362g, ist also trotz des Zusatzakkus nur 128g schwerer. Beim sehr angenehm zu tragenden leichteren K4 spürt man vorne immer noch ein deutliches Übergewicht, so dass der Brillenteil (Meta Quest 3 Eigengewicht 476g) durchaus nach unten gezogen wird, wenn man das Kopfband nicht zu straff anzieht. Beim K4 Boost dagegen ist die Ausgewogenheit deutlich besser, der schwere Akku im hinteren Bereich gleicht das Gewicht des Brillenteils fast aus. Man hat mehr zwar mehr Gewicht auf dem Kopf, aber ich halte es für gerade noch vertretbar.
Die Akkukapazität ist in der Produktbeschreibung (Stand Anfang Oktober 2024) überhaupt nicht angegeben, weshalb ich vor dem Kauf zuerst unsicher war. Auf der Produktverpackung finden sich folgende Angaben: 2 Akkus je 2650mAh ergeben 5300mAh. (Der Vorgängermodell besaß noch einen Akku mit 6400mAh). Die Meta Quest 3 hat laut Hersteller standardmäßig einen Akku mit 4879mAh, so dass man trotzdem von einer soliden Verdopplung der Laufzeit sprechen kann.
Meine Meta Quest 3 erreicht bei normaler Verwendung eine Laufzeit von 1h50min bis maximal 2h15min. Deshalb habe ich das K4 überwiegend in Verbindung mit einer Powerbank genutzt, die man sich um den Hals hängen kann. Das hat Vorteile, weil man weniger Gewicht auf dem Kopf hat und die Powerbank nur bei längeren Anwendungen einsetzt, aber auch Nachteile, weil da immer ein störendes Kabel zur Powerbank führt, das man beim Absetzen des VR-Headsets gern mal vergisst.
Das K4 Boost hingegen schafft Freiheit vom Kabel, dafür hat man das zusätzliche Gewicht halt immer auf dem Kopf. Da es aber eine gute Ausgewogenheit zur Frontlastigkeit der Meta Quest 3 darstellt, fällt das nicht unangenehm auf.
Bei der ersten Verwendung des K4 Boost hat meine Meta Quest 3 ein Update durchgeführt. Ob das Zufall war oder durch den Erstanschluss ausgelöst wurde, weiß ich nicht. Die Wirkungsweise ist so, dass der Akku des K4 Boost permanent den internen Akku der Meta Quest nachlädt und bei 100% hält, so dass die grüne Ladestandsanzeige der Meta Quest 3 immer leuchtet. Erst wenn der Akku des K4 Boost erschöpft ist, wird der interne Akku der Meta Quest 3 geleert und die Füllstandanzeige im Display der Meta Quest 3 beginnt, abwärts zu zählen. Geladen wird das K4 Boost über eine auf den Produktfotos nicht ersichtliche USB C-Buchse an der Unterseite des Akkugehäuses. Den Platz für die Ladebuchse finde ich allerdings sehr suboptimal gewählt. Er ist nicht nur schlecht zugänglich, sondern bei mäßiger Beleuchtung auch schlecht sichtbar. Das ist allerdings mein einziger Kritikpunkt am neuen K4 Boost. Ein kleiner 90 Grad-USB C-Winkel, so eingesteckt, dass der Anschluss nach innen zum Kopf hin zeigt, wirkt Wunder und erleichtert den Zugang zur Ladebuchse ungemein.
Das Laden erfolgt bei montiertem K4 Boost ausschließlich über diese hintere USB C-Buchse und geht mit einem separaten 65W USB-PD-Ladegerät sehr schnell. Während eine volle Aufladung der Meta Quest 3 vorher über die USB C-Buche am Headset 1h55min gebraucht hat, dauerte das Laden von Headset und K4 Boost zusammen über die hintere USB C-Buchse 2h45min, also nur 50min länger als die Meta Quest 3 allein.
Ein erster Dauertest ergab eine Gesamtlaufzeit von 4h25min. Ich gehe aber davon aus, dass der Akku erst nach einigen Ladezyklen seine volle Kapazität ausschöpft, zumindest habe ich diesen Effekt auch beim internen Akku der Meta Quest 3 festgestellt. Deshalb denke ich, dass da noch etwas Luft nach oben ist. Für die meisten Nutzer eines VR-Headsets sollten viereinhalb Stunden ausreichend sein. Wer deutlich mehr braucht, sollte über das Topmodell der Marke BoboVR nachdenken, das mit wechselbaren 10000mAh-Akkus ausgestattet ist. Das ist allerdings nicht nur gewichtsmäßig, sondern auch preismäßig noch einmal eine ganz andere Kategorie, vor allem, wenn man Wechselakku und Ladeschale mit einrechnet.
Noch ein Hinweis: Aufgrund des ausladenden Hinterkopfpolsters, das bei K4 und K4 Boost identisch ist und für den besonders angenehmen Sitz sorgt, ist das Hinterkopfende knapp 13cm hoch und somit passt die Meta Quest 3 damit leider nicht mehr in die meisten Transportboxen, die nur eine maximale Außenhöhe von 12cm haben, was sehr bedauerlich ist. Gerade die besonders stylische Box von AUBICA ist definitiv in Höhe und Breite deutlich zu klein geraten. Schade.
Trotzdem halte ich die beiden neuen Kopfbänder der K4 Reihe für rundum gelungen. Schon das K4 glänzt durch exzellenten Tragekomfort bei geringem Gewicht, aber das K4 Boost ist in meinen Augen eine ganz besondere Empfehlung wert!
- NickReviewed in the Netherlands on 30 March 2025
5.0 out of 5 stars Top Tier Headstrap
I can’t tell you how much I love this headstrap, it fits so well and feel great. It’s still lightweight while taking the weight of your face aswell, the material is top quality and sturdy and the cushions are awesome!
I must mention I also bought the leather facial interface from AMVR, which I absolutely recommend. Killer combo!