Extend Play Time: This Meta Quest 3/ Quest 3S head strap built-in 10000mAh battery, can extend the use of VR headset 2-4 hours, full power VR headset with full battery head strap can be used for 4-7 hours, so that you can experience the VR world immersive! Fastest Charging: The charging power of this Quest 3/ Quest 3S battery strap is 18W, which is the same power as the original charger and the maximum charging power supported by Meta Quest 3. It keeps the headset fully charged and steadily extends the playing time of Meta Quest 3. Safe Charging: This Quest 3/ Quest 3S battery head strap has a built-in smart chip with battery protection, over-heat protection, over-current protection, over-voltage protection, over-charge protection, you can use this battery headstrap without any worry. Comfortable: This Quest 3/ Quest 3S head strap is ergonomically designed to fit different head shapes, the ergonomic design allows the head to evenly share the weight of the headset, solving the problem that the weight of the original head strap is concentrated on the face, allowing you to comfortably immerse yourself in the VR world! Durable: The retractable side strap of this Meta Quest 3/ Quest 3S head strap is made of high quality polymer material, which has high elasticity and toughness, and can pass 30,000 times of bending test, so you don't have to worry about the Meta/Oculus Quest 3 headstrap being damaged or deformed. Stable & Never Fall off: This Meta Quest 3/ Quest 3S headstrap is designed with the strongest locking buckle to keep the head strap stable during use, no need to worry about the Quest 3 head strap falling or loosening. VR fitness, running, and other strenuous exercises won't make the head strap fall off or come loose. Easy to Install: The package contains only 3 parts, head strap, head cushion and back brain pad, no need for complicated assembly, only two steps to connect the head strap and Meta Quest 3/ Quest 3S VR headset, and start enjoying a comfortable VR journey in 1 minutes! Compatibility: This Quest 3/ Quest 3S head strap with battery Only compatible with Meta/Oculus Quest 3/ Quest 3S, not compatible with Meta/Oculus Quest 2 or any other brands or models of VR headsets.