A4tech, Fstyler Wireless Mouse USB - FG20

2.4GHz Wireless Auto-Channel Sort Power Saving Battery Life 4-Way Wheel Anti-Slippery Side Consistent Wireless Stability Advanced 2.4 GHz powerful wireless connection with distances up to 10-15m. Auto Power Saving Auto 4-level power saving. It will be in sleep mode in 0.2s of inactivity. 2000 DPI 3-Level Adjustable Adjustable resolution 1200/1600/2000 DPI. 8-in-One 8 gestures to perform selectable hotkey commands. Comfortable Symmetric Design Symmetric design allows it to fit both right and left hands. 4-Way Wheel Smart vertical and horizontal scrolling in the Excel and website. SPECIFICATIONS Model: FG20 Type: Wireless Connection: 2.4G Hz Operating Range: 10-15m Ergonomic Design: Symmetric Sensor: Optical Resolution: 1200/1600/2000 DPI Report Rate: 125Hz Buttons No.: 4 Receiver: Nano USB Receiver Dimension: 113 x 57 x 26 mm Weight: 62 g ( Batteries not included ) Battery: 2AAA Alkaline Batteries System Requirements: Windows XP / Vista / 7 / 8 / 8.1 / 10