The Lenovo Wireless Mouse N3903 offers exceptional comfort and cordless convenience. It's ergonomic design provides comfort while allowing users the ability to operate with either hand. The integrated on/off button on the bottom of the mouse, allows you to conserve batteries (2 AAA batteries included).

Simply plug in the tiny USB nano-receiver and forget it. Get responsive, smooth cursor control with high-definition optical tracking. This mouse will easily operate on wood, carpet, and other difficult surfaces.<br><br><b>Features & Benefits:</b><br>- Comfortable ergonomic design.<br>- Style is consistent with IdeaPad notebooks.<br>- Mini USB dongle can be stored inside the battery compartment<br>- Enhanced optical system easily tracks on wood, carpet, and other difficult surfaces.<br>- Power saving self-sleep function<br>- Dimensions: 105*56*35mm<br>- Weight: 0.058kg(no battery)