Logitech M187 Ultra Portable

Specifications:
•Sensor technology: Advanced Optical Tracking
•Sensor Resolution: 1000
•Number of buttons: 3
•Scroll Wheel (Y/N): Yes
•Battery life: (6-month battery life*)
•Battery type: 1 AAA battery
•Wireless operating distance: Approx 10m*
•Wireless technology: Advanced 2.4 GHz wireless connectivity
•Interface: USB receiver