Quick thumb function: fast forward or backward when browsing the web,forward of backward at the same folder window.Light Mode Switch:short press to switch 7-color cycle breathing+6 single color breathing+6 single color constant light,A total of 13 kinds of light mode ,long press more than 2 seconds to turn off the lights.Adjusting DPI 6-speed adjustment,1000-1600-2400-3200-5500-9200DPI,1000 DPI red light flash 3 times,1600 orange,2400 green,3200 light blue, 5500 blue,9200 purple.Fire Key Short press to double click, long press more than 2 seconds to switch triple click,light flashes 3 times represents successfully switched.Product Specifications: 1. Size: 130x81x40mm 2. Weight: 145g+-5g 3. Counterweight:8x2.5 Gram tuning weight 4. Customize DPI Switch: 1000/1600/2400/3200/5500/9200 5. FPS: 6666 6. Acceleration:23G 7. Polling rate: 500Hz 8. Switch Life:10 million times 9. Buttons: 8 10. USB Length:1.8M braided-fiber cable 11.Interface: USB 12.Optical type: Red wave 13.Product Compatibility: Compatible Sytem: Compatible with Windows7,Windows 8, Windows XP, Vista, ME,2000,Mac OS and other OS.Connecting with an available USB port.Packing List: 1 x T90 Gaming Mouse 1 x InstructionNote: 1.Please remove the foot pad protective film before use! 2.Press the left and right buttons at the same time more than 2 seconds to restore the factory settings. 3.If you need to customize buttons or lights, you can download the drive software via Zelotes.cn