3 Modes Connectivity With 2.4Ghz wireless, Bluetooth, and USB wired 3 modes connection, this is a wireless gaming keyboard that no longer limits how you can connect. What’s more, in Bluetooth mode, you can connect up to 3 devices. Compatible with Windows/ macOS/ Android. 61 Keys Compact Design No additional number keys can meet your demands in Office or Home. The Mini 60% Mechanical Keyboard is Space-saving and Portable, you will be satisfied at how much space you save. Hot-Swappable Red Switch Linear Switch, meaning that the force at the beginning and the end of each stroke is nearly identical. The result is a feel that most perceive as “smoother” and "faster" making them especially popular among Gaming enthusiasts. RGB Backlit This 60% Custom Mechanical Keyboard has 18 RGB Backlight Modes, 8 monochrome Backlight Modes, and 1 full-Color Backlight. These light modes can provide you with a charming gaming environment at night. Ergonomic Designed The RK61 is designed with 8°Ergonomic angle which can help you relieve straining effectively. The integrated wrist rest gives you the comfort you need for marathon gaming sessions.