Wireless Rechargeable Gaming Mechanical Keyboard 104 Keys Backlit Waterproof. Features: The Two Colors of ABS Particles Are Melted and the Characters Are Not Faded. The Texture of the Key Cap is Delicate. When the Keyboard is Not Resting for More Than 5 Minutes, the Keyboard Automatically Turns Off. Adopt Ergonomic Streamline High and Low Key Position Layout, Adapt to the Human Hand Tapping the Keyboard Movement Arc, Feel ComfortableOnly Charge Twice a Year, Keyboard: Built-in 4000mAh Battery, Mouse: Built-in 800mAh Battery Specifications Interface: USB Keyboard Connection: Wireless Model Number: K620 Type: Ergonomic Type: GAMING Type: Waterproofed Type: Wireless Applicable Object: For Game Products Status: Stock Mouse Connection: Wireless Optical Resolution: 2400 DPI Material: ABS Number of Keys: 104 Frequency: 2.4 GHZ System