KIWI design H4 Boost Battery Head Strap Compatible with Meta Quest 3 or Quest 3S

Extended Playtime with Enhanced Battery: Enjoy uninterrupted gaming with up to 3 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 H4 Boost and Quest 3/3S simultaneously with DualBoost Charging system; fully charged in just 2.5 hours; 45W adapter delivers 25W output to Quest 3/3S; reach 65% charge(Both HMD&H4 Boost) in 60 minutes for 2.5 hours of playtime Adjustable FOV & All-Day Ventilation: Damping sider allows front-to-back FOV adjustments while the headset lever knob provides up-and-down alignment for a clearer experience; innovative ventilation design in the fore cushion keeps the head and face cool during long sessions