Key Features
Made for Meta Quest 3 & 3S
The KIWI design K4 Boost is designed specifically for Meta Quest 3 and Meta Quest 3S, providing a secure fit with integrated battery support. KIWI design
Up to 3 Extra Hours of Playtime
The built-in battery provides additional power for longer VR sessions, helping you stay immersed for more time without relying only on the headset's internal battery. KIWI design
DualBoost Charging
Charge the K4 Boost and your Quest 3/3S simultaneously through the DualBoost charging system. With a 45W adapter, the system can fully recharge both in around 2.5 hours while delivering up to 25W to the headset. KIWI design
Balanced Comfort
The ergonomic rear support, thicker padding and optimized counterweight help distribute the headset's weight more evenly, reducing facial pressure and strain during extended sessions. KIWI design
52° Damped Hinge
The 52° damped hinge makes it easier to put the headset on and take it off while allowing you to adjust its position without removing the entire head strap. KIWI design
Quick-Adjust Dial
The rear adjustment dial allows you to quickly tighten or loosen the strap to achieve a secure and personalized fit. KIWI design
Safety & Reliability
The battery and charging system use multiple layers of protection and meet UL, EN and FCC certification requirements. KIWI design also states that the materials are tested by TÜV laboratories for safety and durability. KIWI design
Perfect For / Use Cases
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Meta Quest 3 users
-
Meta Quest 3S users
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Extended VR gaming sessions
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High-motion VR games
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Fitness and active VR experiences
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VR entertainment and movies
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Users who want additional headset battery life
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Users looking for improved headset balance and comfort
Technical Specifications
| Specification |
Details |
| Brand |
KIWI design
|
| Model |
K4 Boost Battery Head Strap
|
| Compatibility |
Meta Quest 3 / Meta Quest 3S
|
|
Product Type
|
Battery Head Strap
|
|
Built-in Battery
|
Yes |
|
Battery Capacity
|
5300mAh / 20.4Wh
|
|
Extra Playtime
|
Up to 2.5–3 hours*
|
| Charging |
DualBoost charging
|
|
Maximum Charging Power
|
Up to 45W
|
|
Headset Power Delivery
|
Up to 25W
|
|
Dual Charging
|
Headset + Strap
|
| Hinge |
52° damped hinge
|
| Adjustment |
Quick-adjust rear dial
|
| Padding |
Thicker ergonomic padding
|
| Design |
Balanced rear support
|
*KIWI design's current product page highlights up to 3 extra hours, while its comparison/specification section lists up to 2.5 hours. Because the official source contains both figures, I would avoid putting a single number in your Shopify title unless your exact SKU packaging confirms it. KIWI design
What's in the Box
-
KIWI design K4 Boost Battery Head Strap
-
User documentation
Note: Meta Quest 3/3S headset and controllers are not included.
FAQs
Is the KIWI design K4 Boost compatible with Meta Quest 3 and 3S?
Yes. The K4 Boost Battery Head Strap is designed for Meta Quest 3 and Meta Quest 3S. KIWI design
How much extra playtime does the K4 Boost provide?
KIWI design currently advertises up to 3 extra hours, while its detailed comparison information states up to 2.5 hours. Actual battery life can vary depending on usage. KIWI design
Can the Quest 3/3S and head strap charge together?
Yes. The DualBoost charging system supports simultaneous charging of the headset and head strap. With a 45W adapter, KIWI design states that both can fully recharge in approximately 2.5 hours. KIWI design
Does the K4 Boost improve comfort?
Yes. It uses ergonomic rear support, thicker padding and an optimized counterweight to improve weight distribution and reduce facial pressure and strain. KIWI design
Does it include the Meta Quest headset?
No. The K4 Boost is an accessory head strap. The Meta Quest 3/3S headset and controllers are not included.
