Model: M915 Sensor: optical A704 Resolution: 800-1200-1600-2400 dpi Buttons: 5+1(scroll wheel) Gaming type: FPS/MMORPG/MOBA/RTS Polling rate: 250 Hz/ms Frame rate: 4000 fps Acceleration: Max. 8 g Tracking Speed: Max. 30 ips Compatible system: Win XP/Vista/7/8/10, MAC OS Interface: USB Cable length: 1.6±0.01m Driver software: www.meetion.com/driver Dimension: 135*73*42mm Weight: 160±5g