Product name: CheerTok Air Input voltage: 5V Endurance: 20+days Battery capacity: 200mAh Charging time: 1.5 hours Bluetooth version: BLE5.0 Operating environment: - 10 ℃ - 40 ℃ Compatibility: iOS 14 and above, Android 8 and above Note: CheerTok Air single-key version adds a one-key lock screen function,This function only supports Android and Hongmeng systems Specifications: A: Double bond Colour: H: White Material:plastic Size:69.5x38.5x11.5mm Package Contents: 1 x Mobile Phone Remote Control 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.