Gear Head KB5500W is a wireless desktop set that includes a keyboard and an optical mouse. The set is compatible with IBM PCs, 100% Compatibles, or Macs, and requires an available USB port. The keyboard has 800 DPI and a maximum operating distance of 30 feet. It also features special function keys that allow you to quickly access commonly used functions such as opening My Computer, playing and pausing multimedia files, and adjusting the volume. The mouse has a similar range and DPI, and it uses two AA batteries.