[Head Strap With 8000mAh Battery]Head strap for , built-in 8000mAh rechargeable battery and high-speed cable, extend 8 hours playtime. With strong compatibility, when Quest 2 is connected, you can charge head strap and quest 2 at the same time, providing you the best charging solution. [Head Strap With Great Comfort]The battery weight cleverly balances the weight of quest 2. Along with ultra-light and ergonomic design reduce the facial pressure brought by quest 2 and greatly the comfort. TPU back pad adds a hole design, more breathable, reduces sweating, not easy to slide, improves the support , and greatly enhances the gaming experience. [-friendly and Durable Materials]head strap is made of plastic, which has much better tenacity that could stand over 100,000 bending. The risk of broken is rejected, greatly improved service life and environmental protection. [Superior Safety]Built-in Safety Protection System ensures the safety of you and your devices, comprehensive safety system includes Over-current protection, overcharge protection, overload protection and over-temperature protection, and more. [Quick Cleaning]The TPU pad is easy to clean,will be no peculiar smell and stains. you just need to wipe with a damp cloth. Colour:black :plastic Package Contents: 1 x Head Strap Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.