Quest 2 Head Strap with 6000mAh Battery PackALPHA DIGITAL Upgraded Adjustable Head Strap offer you better design, better quality, better comfort, better support, and lets you have a better VR experience. Ergonomic Design increase comfortable and delightful for long-time wearing. An ideal replacement for the official elite strap.Safety Protection SystemThe battery pack built-in Exclusive Safety Protection System (over-current, over-power, over-voltage, over-charge, over-heat, short circuit) ensur