ZELOTES T20 USB Wired Vertical Optical Mouse Rechargeable Ergonomic 4 Gears 3200 DPI 6 Buttons Gaming Mice for PC Computer Feature: 4 levels of DPI adjustable, 1200-1600-2400-3200DPI. Ergonomic design, long-term use will not fatigue. Compatible with Windows XP, Vista, Windows 7, ME, 2000 and Mac OS...or the latest version. Specification: Brand: ZELOTES Model: T20 Colour: Black Connection with Computer: USB Wired Working Method: Optical  Photoelectric Resolution: 1200-1600-2400-3200DPI Number Of Keys: 6 Keys Working Voltage/Current: 5V/100mA Button Life: 5 Million Times Roller Life: 1.2 Million Revolutions Return Rate: 125Hz Ergonomics: Support Cable Length: 1.8m/5.91ft Product Size: 110 X 72 X 75mm/4.33 X 2.83 X 2.95" Product Weight: 160g Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-3mm measuring deviation due to manual measurement. Included: 1 X Gaming Mouse 1 X Manual 4 levels of DPI adjustable, 1200-1600-2400-3200DPI. Ergonomic design, long-term use will not fatigue. Compatible with Windows XP, Vista, Windows 7, ME, 2000 and Mac OS...or the latest version.