KIWI design, a global leader in premium XR accessories, is redefining the VR battery strap experience with its innovative DualFast Technology—now featured in both the K4 Boost and H4 Boost head straps for Meta Quest 3/3S.

Unlike traditional battery head straps that often prioritize capacity over comfort, KIWI design takes a smarter approach. By leveraging fast charging technology, both K4 Boost and H4 Boost maintain a lightweight battery profile without compromising performance. This design philosophy not only enhances comfort but also aligns with the way most users actually play: in sessions that include breaks for rest or hydration.

Quick Top-Ups, No Downtime

The DualFast charging system enables 22.5W simultaneous high-speed charging of both the headset and the head strap battery—using just a single USB-C cable. That means when you plug in your head strap with a 45W adapter, you're also topping up your headset battery at full speed—no extra cables or adapters needed.

This convenience is especially valuable for casual gamers, fitness users, or households with multiple players. You can take a short break and return to a freshly charged headset, keeping the flow going without long waiting times. Whether you're hopping into multiplayer matches, enjoying cinematic VR, or getting a quick workout in, DualFast ensures you're always ready to dive back in.