Features: Instructions for use: the three-speed fan changes every for time you flip the switch, and the fan speed changes once. 3 Speeds: off gear, medium speed, full speed. When the battery is charging, the red light is on, and when the battery is fully charged, the red Light is off Equipped with high speed micro fan to quickly exhaust air to prevent lens fogging Easy to use and take with, let you immersed in the VR world completely Specifications: Input interface: TYPE-C Input Voltage: 5V 0.15V Input current: >500 mA Three-speed fan control: stop, medium speed, high speed The red light is on when the battery is charging, and the red light is off when the battery is fully charged Battery charging current: 200mA Fan high speed ice blue light on, medium speed ice blue light on, fan off blue light off Note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment. Package includes: 1 PC x Fan