Logitech 910-005873/910-005869 Ergo M575 Wireless Ergonomic Trackball Mouse
* Logitech Advanced Optical Tracking
* Precision Scroll Wheel
* Bluetooth or USB Receiver: 10m Wireless Range
* 5 Buttons (Left/Right-Click, Back/Forward, Scroll-Wheel with middle click)
* DPI value: 400, Up to 2000 dpi
* Battery type: 1 x AA battery (included)
* Up to 20 Month Battery life with Bluetooth, Up to 24 Months with Unifying Reciever
* 1-Year Limited Hardware Warranty