Wireless Keyboard and Mouse Set for Logitech MK270 With precise cursor control, a number pad, and media keys, your work will run much more smoothly. Specifications for technology Wi-Fi range: 33 feet (10 meters) Range of wireless: 33 feet (10 meters) Variations in computing and environmental conditions can affect wireless range. Design that prevents spills on the keyboard tested in a restricted environment with a maximum liquid spillage of 60 milliliters. The keyboard should not be submerged in liquid. 10-Key number pad with keyboard height adjustment Type of key: deep profile Caps lock indicator light Power switch, on/off An alkaline battery and two AAA batteries 36-month battery life 3. Calculation of keyboard battery life based on an estimated two million keystrokes per year in an office setting. The experience of the user may differ. Depending on the user, mouse battery life may vary.