Spedification: DPI:800\/1200\/2000\/2800DPI Under different DPI， the LED color is different 800DPI:no backlit 1200DPI:deep green backlit 2000DPI:red backlt 2800DPI:olivine backlit Keys:6 keys:Right key， Left key， Mouse wheel， DPI key，Forward Key， Backward key 3 colors of backlit:red，deep green，olivine Image processing: 500Hz\/2ms response time SENSOR A5050 Maximum speed: 30ips The maximum acceleration: 8G USB data format:16bits The 5 has a macro feature programmable control key Wire:1.8m Size:126.7mm*71.1mm*41.6mm Package inlcuded: 1 x mouse