1. Chasing Leopard V17 Usb 2400dpi Four-speed Adjustable Line Pattern Wired Optical Gaming Mouse With Led Breathing Light, Length: 1.45m 2. 800120016002400dpi 4-speed Adjustment, Multi-color Breathing Light Can Be Switched Freely. 3. Optical Engine, Accurate Positioning, Fast Response, And Millisecond-level Button Response Speed. 4. Non-slip Pattern Flank, Designed To Fit The Thumb, Suitable For Gamers. 5. The Left Wing Is Equipped With The Forward Button And The Back Button, Which Effectively Provides The Game Player With Multiple Click Buttons, And It Is More Convenient To View The Mail And Flip Through The Web Page. 6. With The Built-in Drive Settings Of The Mouse, Double-click The Interval Time, The Pointer Speed, The Pendulum Speed And The Wheel Speed, And The Weighting Block At The Bottom Is Fast, Accurate And Stable During Operation. 7. Rubber Anti-skid Roller, Reflecting Sensitivity And Accurate Click. 8. Ergonomically Symmetrical Design, Suitable For Asians, Right And Left, Comfortable And Comfortable.