Microsoft Wireless Bluetooth Mobile Mouse 3600 - Red

Compact for portability
You'll appreciate how the Bluetooth Mobile Mouse 3600 comfortably fits your hand and your mobile lifestyle. Use it just about anywhere, even on a rough park bench or your living room carpet, relying on Microsoft BlueTrack Technology1. No transceivers or wires to manage. Keep using your mouse for up to six months with a single battery.
 - BlueTrack Technology does not work on clear glass or mirrored surfaces