Perixx PERIPAD-602, Wireless Numeric Keypad for Laptop - Tab Key Feature - Big Print Letters - Nano Receiver with Storage Compartment - Black Non-synchronized function Wireless 2.4G technology with up to 10 M operating range On/off power switch; 2xAAA Batteries required (Batteries are not included in package) Compatible with Windows 7, 8, and 10; wireless 2.4G connection Numeric keypad Number pad pads ten key