Ergonomic split-key design: The integrated palm rest supports the wrists and reduces the lower arm tension. Natural arm and hand posture during typing minimizes the risk of RSI and carpal tunnel syndrome. Dual wireless mode: Switch between the standard 2.4 GHz radio and the Bluetooth 4.0 connection by pressing the switch on the bottom of the keyboard. The nano-receiver is securely located in the compartment on the bottom of the keyboard. 7 multimedia keys: The function keys are optimized for use with Mac and Windows and provide quick access to multimedia, including browser opening, email, volume control, mute, sleep mode and search. 4 additional key caps are also included to adapt to the Mac key layout and tool. Tactile responsive keys: With long range for a satisfying click and less typing errors.This text is machine translated.