






🔋 Level up your VR game with power and comfort that lasts!
The KIWI design K4 Boost Comfort Battery Head Strap is a premium accessory for Meta/Oculus Quest 3/3S, delivering up to 3 additional hours of battery life with a dual fast-charging system that powers both the headset and battery strap in just 2.5 hours. Designed for extended comfort, it features enhanced padding and balanced weight distribution to reduce fatigue during long VR sessions. Built with high-quality, UL-certified battery cells and advanced safety protections, it ensures reliable and safe performance. Easy to wear and adjust, this head strap is the ultimate upgrade for serious VR enthusiasts seeking longer playtime and superior comfort.













| ASIN | B0D4TGY2F2 |
| Age Range Description | Adult |
| Battery Average Life | 3 Hours |
| Battery Capacity | 3 Hours |
| Best Sellers Rank | 1,039 in PC & Video Games ( See Top 100 in PC & Video Games ) 34 in Standalone Virtual Reality Accessories |
| Box Contents | Battery, Headstrap |
| Brand | KIWI design |
| Brand Name | KIWI design |
| Colour | White |
| Compatible Devices | Personal computer, smartphone |
| Compatible devices | Personal computer, smartphone |
| Connectivity technology | Bluetooth |
| Connector Type | USB Type C |
| Controller Type | Knob Control |
| Country of Origin | China |
| Customer Reviews | 4.3 out of 5 stars 2,245 Reviews |
| Display Type | OLED |
| Field Of View | 52 Degrees |
| Included components | Battery, Headstrap |
| Item Weight | 363 g |
| Manufacturer | Shenzhen Hongjiantou Technology Co., Ltd. |
| Maximum Display Resolution | 1832x1920 |
| Model Number | QS02B |
| Network Connectivity Technology | Bluetooth |
| Operating System | Oculus |
| Platform | Meta Quest |
| Product Features | Lightweight |
| Refresh Rate | 90. |
| Resolution | 1832 x 1920 |
| Sensor Technology | Inside-out tracking |
| Special feature | Lightweight |
| Specific Uses For Product | Play, 360 degree video watching |
| UPC | 850052498382 |
M**T
Good but expensive
Lovely and comfortable as you would expect from the KIWI brand,love the touch to add built in headset..probably done this as no one else has and to keep relevant.Over 4 hours extra battery life so its a game changer. It's expensive £130,is it worth it? In all honesty as good as it is NO its not worth that expense that's alot of money in this age where people watch what they spend with bills rising,but if you want the best and a great extra battery life compared to the previous model and willing to pay..this in my opinion is it
M**E
Big upgrade over the standard head strap
Recently 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.
P**P
Solid
Good head strap and comfortable to wear with the padding. Feels durable and size adjustability is good. I find the battery design useful for a quick top up if I want to extend my session by 30 minutes, or when I forget to charge the quest! Easy to attach to the headset.
F**Y
This has completely change the meta quest 3. 3 in 1. Why is this not an official meta quest product.
Quick summary Meta quest 3 transforms into something greater with this. This has completely change the meta quest 3. For the better. The comfort is just exceptional The sounds is so good with movies. Or like 3D avatar, etc Star Trek. VR Games are insane with the sound. It’s literally stepping into a new class of sound. The official meta quest battery isn’t the best compared to this. This headset/strap is how I would say an official one should be like. I am absolutely shocked, It’s a wow factor that meta quest has not copy this idea. Absolutely nuts. 5 hours of battery life, sound is premium, the comfort is insane. Thank you for making this product. My head is still trying to work out why meta quest made the official one the way it is. Strap and battery and price it at the range of this, I’m still trying to understand the concept. It’s literally insane. One you use both you’ll see what I mean.
J**Y
amazing
got this the other day and it is generally good and i love it would recommend the audio is much better then the other reviews said and its comfy and would recommend getting if you want comfy vr play
M**D
A Game-Changer for Comfort and Battery Life
The 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!
?**?
Good but not quite great
Update: I’ve added another star for excellent customer service as they have refunded the cost of the unit. I plan on purchasing from Kiwi Design again as this really builds confidence in the company and their commitment to providing great products. Purchased two of these, one for my wife and one for me. I was disappointed that the headphones didn’t really add anything in trend of volume over the inbuilt Quest 3 audio but they did add a lot of bulk. In addition one of the arms in my wife’s set broke and has now been taped up as otherwise it’s literally dangling by a thin wire. The battery life certainly improves the gaming time available to you and can get you through a 2 1/2+ hour film so that’s a good element. In hindsight I think I would purchase the Kiwi H4 boost over the more expensive K4
F**E
Received a damaged item, twice!
First one I ordered broke as soon as I removed it from the box. Headphone detached. Ordered a replacement which was broken in exactly the same place. No damage to packaging, so was it boxed, damaged? Who knows? Really disappointed.
Trustpilot
3 days ago
1 day ago