Features:<br> 1.BOBOVR specially developed a Strap upgrade kit for Pico4, which can improve the battery life and comfort of Pico4. It includes a circular power supply system composed of 2 magnetic suction battery packs and a charging stand, and upgrades the back of the head cushion and the top Strap.<br> 2.Using BOBOVR's innovative magnetic design, the battery pack can be quickly replaced with one hand at any time during use to keep the battery fully charged.<br> 3.Each battery pack has a capacity of 5200mah and provides 12w discharge power<br> 4.The magnetic charging stand does not include a USB charger, please use Quest2 or other standard USB-C chargers<br> 5.The matching B2 battery pack weighs only 140g and has a capacity of 5200mah. It can double the battery life of the Pico4 when fully charged, and can provide unlimited power supply by changing the battery<br> Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Dadangjia