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🔋 Level up your VR game with power, speed, and comfort — don’t get left behind!
The KIWI design K4 Boost Comfort Battery Head Strap is a premium accessory for Meta/Oculus Quest 3/3S that extends playtime by 3 hours with a fast dual charging system completing full charge in 2.5 hours. Designed for ergonomic comfort with enhanced padding and balanced weight distribution, it ensures longer, strain-free VR sessions. Built with high-quality, UL-certified battery cells and advanced safety features, it offers reliable performance. Easy to wear and adjust, it’s perfect for sharing immersive VR experiences effortlessly.






| ASIN | B0D4TGY2F2 |
| Additional Features | Lightweight |
| Age Range Description | Adult |
| Battery Average Life | 3 Hours |
| Battery Capacity | 3 |
| Best Sellers Rank | #981 in Videogames ( See Top 100 in Videogames ) #26 in Virtual Reality Hardware & Accessories |
| Brand | KIWI design |
| Built-In Media | Headstrap |
| Color | White |
| Colour | White |
| Compatible Devices | Personal computer, smartphone |
| Compatible devices | Personal computer, smartphone |
| Connectivity Technology | Bluetooth |
| Connectivity technology | Bluetooth |
| Connector Type | USB Type C |
| Controller Type | Knob Control |
| Country of Origin | China |
| Customer Reviews | 4.6 out of 5 stars 2,249 Reviews |
| Display Maximum Resolution | 3664 x 1920 |
| Display Refresh Rate in Hertz | 90 |
| Display Resolution Maximum | 1832x1920 |
| Display Type | OLED |
| Field Of View | 52 Degrees |
| Included components | Headstrap |
| Is Mixed Reality Compatible | No |
| Item Weight | 363 g |
| Manufacturer | Shenzhen Hongjiantou Technology Co., Ltd. |
| Mfr Part Number | QS02B |
| Model Number | QS02B |
| Operating System | Oculus |
| Platform | Meta Quest |
| Resolution | 1832 x 1920 |
| Sensor Technology | Inside-out tracking |
| Special features | Lightweight |
| Specific Uses For Product | Play, 360 degree video watching |
| UPC | 850052498382 |
| Unit Count | 1 Count |
| VR Operating Platform Compatibility | Standalone |
| Warranty Description | 2 Year Manufacturer |
M**R
Perfect
Just perfect
S**1
Battery life adds up to 1.5 hrs
Comfortable and reliable. The weight balance will cause less strain on the neck/ face
M**K
Value for money
I can use my Quest for longer periods
M**.
Really good but..
This is a high quality product, it extends the VR's battery ... but, it is quity funky when it comes to keeping it pluugged while using the VR... for some reason, it stops charging the VR headset or charges at a very low speed... and sometimes it works like charm! .. a bit weird! I have the Meta Quest 3.
A**I
Not comfortable
Not very comfortable.
S**E
Balanced Comfort Strap with Built-in Battery
The K4 Boost Comfort Battery Head Strap is a great add-on for my Quest 3S. It makes the headset feel much more comfortable, with the balanced design taking a lot of the weight of the headset away from your face. The built-in battery extends the headset play time by around 2.5 hours. When connected, the strap battery is used first before the headset battery, which is a sensible way for it to operate. Installation is very simple and only takes about 30 seconds. Charging time is also quite fast, roughly the same as charging the headset itself. A handy bonus is that the strap can remain plugged into the headset all the time, and charging the strap will charge both the strap and the headset together. If you want a more comfortable headset with roughly double the run time, this is a very worthwhile upgrade.
A**Y
Best quest 3 strap I have tried
I've tried this strap and the bobo vr s3 pro. This one fits me more comfortably. I have a very large head. I ended up keeping the k4 boost and giving the bobo vr strap to my son, it fits him much better than it fits me. The battery life seems sufficient with this strap and it is easy to charge the strap and the headset together. For best results you will need to buy a 45watt charging brick it is not included with the strap and the brick supplied with the headset is only 25 watts. The one conplaint I have is if you leave it plugged into the quest when you arentnusing it, it will drain the battery in the strap a little even if the headset is fully charged. There is no power button like the bobo s3 has. So you need to unplug it from the headset when the battery amd the headset have reached full charge before storage. Overall im happy woth my purchase. Its loads more comfortable than the stock strap and opens and closes to accommodate any head size.
M**G
Top Headstrap 👍🏻
Das hier ist mein erstes Headstrap und somit habe ich keinen anderen Vergleich als zum orginalen Headstrap von Meta was bei der Quest beiliegt. Zuerst einmal möchte ich dazu sagen, das die Verarbeitung des Kiwi Headstrap wirklich gut und hochwertig ist. Die Montage ist wirklich kinderleicht, ich als handwerklich unbegabter, konnte das alte Headstrap innerhalb von ein paar Minuten wechseln. Das Kiwi Headstrap lässt sich sehr einfach auf den Kopf setzen, es passt immer direkt und muss mit den gut zu erreichenden Kopffixierer nur festgezogen werden, was alles zusammen nicht länger als ein paar Sekunden benötigt. Da man das Headstrap von hinten bis zur hälfte nach oben klappen kann, muss man als Brillenträger sich nicht mehr in die Brille zwängen und den Abstand justieren, man kann direkt exakt und einfach in die Brille schlüpfen. Die Kopfstütze und das Kopfband sind sehr bequem und mit dem Orginal nicht vergleichbar, der Komfort des Kiwi Headstrap ist dagegen fantastisch, weich und sehr angenehm, sich den Kopf anpassend. Das Gewicht des Akkus und Headstrap spürt man schon leicht am Hinterkopf, aber nicht ansatzweise so stark wie mit dem orginalen Headstrap an Vorder und Rückseite. Durch die Form wird das Gewicht von vorne zusätzlich nach hinten verlagert und es fühlt sich allgemein viel leichter und besser an als mit dem Orginal von Meta, der Kopf wird viel weniger belastet und alles ist viel angenehmer und bequemer. Dadurch gibt es auch keine bis wenige Druckstellen im Gesicht, auch nach längeren Spielzeiten. Der Akku ist fest verbaut, hält bei mir +2 Std, lädt sich in einer normalen Geschwindigkeit auf, durch Lichter am Batteriestrap wird der Akkustand abgelesen und durch einen Anschluss unten aufgeladen. Mein Fazit ist, das jeder seinen Komfort, seinen Spielspaß und Spielzeit mit diesem Headstrap von Kiwi viel verbessert. Ein 100% Kaufempfehlung für jeden Qurst 3 Besitzer. Zudem ist das Preisleistungsverhältnis wirklich gut. Ich bin vollkommen zufrieden mit dem Produkt.
J**K
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.
S**B
Must have product for metaquest 3
This is must to have product for metquest 3. Not worried about the battery backup now. I bought one pouch also from Amazon (grey colour one) , and the good lart is, with this head strap, I was able to get it inside that pouch (not that easy though). Kiwi can think of a pouch as well which suits the stap easily.
Trustpilot
3 days ago
1 month ago