MoGo Mouse BT is a business card sized, Bluetooth-enabled mouse that stores and recharges neatly inside your laptop computer"s PC card slot. MoGo Mouse BT features optics and system that automatically levers the mouse up into your hand as you work. The MoGo Mouse BT recharges in less than an hour in the PC card slot of your laptop with no batteries to replace. MoGo Mouse BT is specifically designed for people who hate carrying around full-sized, bulky mice. MoGo Mouse BT provides you with a solution to their problem, making it easier for them to work on the road. Mini-mice get lost in your hand and difficult to maneuver. Up to 30 feet (10 m) working range Less than 4 dBm RF transmit power operating 4.2V Battery Voltage 165 mAh Internal Rechargable Operating Current 32mA Standby Current 22 ma and. 04mA Sleep Mode Current 500 DPI Resolution Operating System - Bluetooth-enabled Windows 98, ME, 2000, or XP, Mac OS 10.2.8 or later Dimensions - 3.4 x 2.125 x 0.21 inch (86 x 54 x 5 mm) Weight - 1.5 ounces, 41 grams