Broad Compatibility: Never worry about bothering others. The wireless USB keyboard widely compatible with Windows 2000 / XP / Vista /7/8/10/ Mac / Linux. Adjustable Palm Lift: Whether seated or standing, keep your wrists in total comfort and a natural typing posture with ergonomically-designed tilt legs of 0, -2 and -4 degrees. 2.4G Wireless Connection: (The dongle is under the battery compartment cover, batteries are not included) 2.4G Wireless Keyboard with approximately 33 feet (10 m) operating distance is designed with Plug & Play. The ergonomic keyboard with automatic sleep mode function and a separate ON/OFF switch, if release the button for 8 minutes, the sleep mode can be automatically switched. One-Piece Palm Rest and Curved Design: Built-in pillowed wrist rest with skin-friendly synthetic leather, so that hand typing comfortably maintains the same level with the keyboard; The natural curved keys imitate the curved shape of the fingertips with adjustable kickstand to improve the overall comfort and reduce pressure on hands and wrists. Split Ergonomic Design: The split keyboard divides the keys to 2 zones and keep the posture of hand and forearm at an angle. Scientifically ergonomic designed keyboard encourages healthy wrist and arm positions for more precise and much smoother movement and less strain. Perfect for those Office-men needing long time working with the keyboard.