[Head Strap With 8000mAh Battery]Head strap for 2, 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 material and ergonomic design reduce the facial pressure brought by quest 2 and greatly improve the comfort. TPU back pad adds a hole design, more breathable, reduces sweating, not easy to slide, improves the support ability, and greatly enhances the gaming experience. [Eco-friendly and Durable Materials]head strap is made of plastic, which has much better tenacity that could stand over 100,000 times bending. The risk of broken is rejected, greatly improved service life and environmental protection. [Superior Safety]Built-in Exclusive 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 Material: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 picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.