Main Features:● Excellent ergonomic design, better fit for your using habit● Buttons: 4 buttons with scroll wheel● Tracking systems: Optical● Drawing wire equipped with strong defense magnet ring, anti-interference and durable● Adjustable DPI: Max to 2400DPI ( 800 - 1200 - 1600 -2400 )● High precision: Ultra-precise scroll wheel, professional gaming chips, high precision and rapid response● Optical technology works on most surfaces, long-term use without fatigue● Intelligent connectivity, plug and play● Switch life: 10 million cycles● Compatible with Windows XP / Vista / 7 / 8 / ME / 2000 / Mac OS Product Brand: RAJFOO Application: Desktop,Laptop Color: Black DPI: 1200,1600,2400,800 Hand Orientation: Right Interface Type: USB Number of Buttons: 4 Tracking Method: Optical Type: Wired Wrist Support: Yes Package weight: 0.181 kg Product Size(L x W x H): 12.00 x 7.00 x 3.00 cm / 4.72 x 2.76 x 1.18 inches Package Size(L x W x H): 18.50 x 12.50 x 4.50 cm / 7.28 x 4.92 x 1.77 inches Package Contents: 1 x RAJFOO I5 Wired Optical Backlight Gaming Mouse