Mechanical Keyboard 83 Key Knob Control Round Keycaps Ergonomic Plug and Play 3 Modes Wireless Keyboard for Phone Laptop Pink Item Type: Mechanical Keyboard Material: Metal, Plastic, Electronics Applicable Model: Universal Key: 83 Keys Interface: Type C Plug and Play: Yes Connection with Computer: Wireless Support Multimedia Keys: Yes Shortcut Key: Yes Waterproof Function: Waterproof Key Technology: Mechanical Switch Backlight Function: Backlight Supported Ergonomics Supported: Yes Operating Current when Backlight is On: 150mA Operating Current when Backlight is Off: 8mA Sleep Current in BT Mode: 0.6mA Key Collision Free: Full Key Collision Free in Wired Connection, 6 Keys Collision Free in BT Mode. Operating Voltage: 3.7V Working Mode: Wired/Wireless/BT Sleep Time: Automatically Enter the Sleep State 2 Minutes After No Operation. Press Any Key to Wake Up Operating System: Suitable for Win 2000 or Higher, For OS X Laptop Operating Systems, for Win 8 or Higher Battery Type: Inbuilt 2000mAh Lithium Battery (Battery Included)