ERGONOMIC SPLIT-KEY DESIGN - Integrated palm rest supports your wrists, releases median nerve pressure, and reduces forearm tension; Natural arm and hand position while typing to minimize chances of RSI, carpal tunnel syndrome WIRELESS 2.4 GHZ AND BLUETOOTH CONNECTION - Switch between two connection options at the bottom of the keyboard; nano receiver is stored safely in the compartment at the bottom of the keyboard DUAL OPERATING SYSTEM - Compatible with Mac and Windows including shortcuts and function keys; 4 additional switchable keys for Mac of Windows key layout and a key puller is also provided in the box TACTILE RESPONSIVE KEYS- With long travel distance that gives a satisfying typing feeling and decreases mistyping DIMENSIONS - 19.09 x 9.29 x 1.69 inches WEIGHT - 2.17 lb SYSTEM REQUIREMENTS - Windows 7/8/10 and above macOS X 10.10 and above