Wireless optical mouse LOGITECH ERGO M575, Bluetooth, Trackball

Minimize movement and maximize comfort with the ERGO M575 – a wireless trackball with a sculpted ergonomic shape.
Without having to move your hand to move the cursor, your hand remains relaxed. Smooth and responsive
the thumb control can be used anywhere - and since it doesn't need to be moved - the ERGO M575 is ideal
for narrow desk spaces.

Sensor technology: Logitech Advanced Optical Tracking
Resolution: 400 - 2000 dpi
Number of buttons: 5 (Left/Right-click, Back/Forward, Scroll-wheel with middle click)
Battery: 1 x AA (included)
Battery life with USB receiver: up to 24 months
Bluetooth battery life: up to 20 months