Satechi Aluminum Bluetooth Wireless Keypad Number Pad Keyboard for iMac MacBook Laptop Desktop PC Computer Compatible with Windows & OS X System 22 KEY WIRELESS KEYPAD  includes undo, cut, copy, paste for quick word processing and data entry BLUETOOTH 3.0  compatible with Bluetooth-enabled Macs and PCs OPTIMUM COMFORT  features an ergonomic tilt and anti-slip pads for easy and comfortable typing EXPAND YOUR KEYBOARD  use the wireless keypad to assist in accounting tasks, excel spreadsheets, and more BATTERY POWERED  uses 2 AAA batteries and boasts up to 6 months of battery life (based on 1 hour of usage/day)