Part number 4X30M56887 Overview The ThinkPad Essential Wireless Mouse is an excellent choice as a travel-sized wireless mouse. This sleek and stylish travel-size design offers exceptional quality in a modern wireless solution. The compact ambidextrous mouse provides excellent portability and perfect ergonomics. Features & Benefits Precise 1200 dpi optical sensor. Connect compatible Lenovo devices with just 1 nano receiver. 3 Buttons (1) Left click, (2) Right click, (3) Click wheel Ambidextrous design for both left and right hand comfort 1 AA battery for 12 months battery life