Wireless optical mouse with 6 buttons.
With practical DPI button (800-1200-1600 DPI) for adjusting the sensitivity of the mouse.
With 2 buttons on the side for quick navigation to the previous/next page

Specifications
Wireless technology: 2.4 GHz, GFSK RF modulation, 80 channels, 32 bit device ID
Operating distance: up to 10 m
RF power: 3 dBm (max. EIRP)
Internal antenna type; antenna gain in dBi (typical): 2 dBi ±1 dBi
Optical resolution: 800, 1200, 1600 DPI selectable by the button
Power supply: AAA battery x 2 pc (not included)
Power consumption: 1.5 V DC, up to 15 mA
Ambidextrous: No, for right handed use only
Nano receiver: USB 1.1 compatible, weight 2 g, 6 x 14 x 18 mm
Mouse: dimensions 95 x 65 x 36 mm, net weight 84 g (without batteries)
Operating conditions: -5...45 Celsius degrees, 10-80 % humidity