Accepting Offer! Brand New Open Box KIWI design Comfort Battery Head Strap 6400mAh Compatible with Quest 2 Accessories, Battery Pack Elite Strap Replacement for Enhanced Support NOT Compatible with Our RGB Vertical Charging Stand. Luxurious Comfort: KIWI design battery head strap features soft and thick cushions on the top and back, along with a perfectly counterweighted battery pack and ergonomic design, providing unparalleled comfort while wearing Simultaneous Charging: With our plug-and-charge design battery elite strap, you can hassle-freely charge both the headset and battery strap simultaneously with a single cable, saving time and effort. It ensures your headset is always ready to go and perfect for frequent VR users. NOTE: NOT Compatible with our RGB Vertical Charging Stand Safety-First Battery: Built-in 6400mAh industrial-rank high-energy-density battery, which is certified for safety and works with enhanced efficiency. Get an additional 2.5-5 hours of VR time (depending on the apps) when fully charged Improved Side Straps: Our VR headset has a durable and sturdy eco-friendly polymer side strap that can bend up to 10,000 times. And a 52° adjustable hinge design allows for effortless wearing and taking off by flipping up the headset It's important to make sure the battery cable is securely plugged into your headset until a reassuring click sound. Normally the indicator LEDs should turn on once the cable is plugged in place *Don't know much about his product*