Color: Black/White Features: Flip up and down short videos, flip e-book pages, double-click to save, take photos and videos, increase and decrease volume, slow scroll up and down when reading Moveable mouse, stand function, Type-C charging Bluetooth Version: Ver. 5.3 Supported Protocol: BLE Transmitter Power: Class II (-6dBm to +4dBm) Frequency (Hz): 2.40GHz to 2.48GHz Bluetooth Transmission Range: 10 meters Charging Port: Type-C Input Current: DC5V Ring Battery: 40mAh*1 Charging Case: 180mAh*1 Usage Time: Approximately 8 hours Charging Time: Approximately 1 hour Concealed Phone Holder Dimensions: 39*33*23mm/52*56*35mm Packaging Box Dimensions: 120*78*37mm Full Set Weight: 68g Includes: Charging Case, Remote Control + Type-C Cable + Manual + Packaging