Specification: Item: Mouse Model: C-13 Keys: 13 DPI: 1500-2500-4000-7000-10000DPI (Adjustable) Rate of Return: 125-1000Hz Tracking System: Optical USB Cable Length: 1.8m / 70.9inches Operating Voltage/Current: 5V 100mA Keystroke: 12 million clicks Life of Scroll Wheel: 1.2 million turns Size: 122 * 76 * 40mm / 4.8 * 3 * 1.6inches Weight: Approx. 165g / 5.8oz Package Size: 15.5 * 11.5 * 5cm / 6.1 * 4.5 * 2inches Package Weight: 303g / 10.7oz System Requirements: For Windows：2000/ME/XP（x64）/Vista/7/8 For Mac OS X（over V10.4） *Note: You can find and download drivers at the following website——://..cn/en/ Package Include: 1 * Mouse 1 * Foot Pad 1 * Manual