• 18 full-size keys including backspace key • 2.4GHz RF technology offers wireless freedom with effective range up to 33ft with USB micro receiver • Asynchronous number lock function operates independently of computer keypad for faster numeric data entry • Auto power management hibernation mode helps maintain proper battery levels • Membrane key switches reduce typing noise improve response & provide low-profile keystrokes • Ultraslim & lightweight--ideal for notebook computer users • Ergonomic design provides support for comfortable use & avoidance of wrist strain • Full-sized low-profile keys are easy to identify • Plug & play--no drivers or installation required • 3-year warranty • Includes one AAA battery;