Logitech Wireless Ultra Portable M187

Sensor technology: Advanced Optical Tracking Sensor resolution: 1000 dpi Number of Buttons: 3 Scroll Wheel (Y/N): Yes Battery: (6- month battery life) ? Battery type: 1 AAA battery Wireless operating distance: Approx 32.81 ft (10 m) ? Wireless technology: Advanced 2.4 GHz wireless connectivity Interface: USB receiver