Fangrui Product Details 1. E50 2.4g Wireless Mouse Jiggler Portable Cordless Mouse With 7 Keys 2. Wireless Technology: 2.4g 3. Wireless Distance: About 10m 4. Resolution: 80012001600dpi 5. Number Of Keys: 7 Keys 6. Material: Abs + Matte Oil 7. Battery Capacity: 400mah 8. Interface: Usb 9. Size: About 12.1 X 7.1 X 4cm 10. Weight: About 100g 11. Features: 12. This Is Not Only An External Wireless Mouse, But Also A Mouse Jitter To Help Keep Your Computer Active, Press The Mouse Jitter Button To Enter Or Exit The Jitter Function 13. 2.4g Wireless Connection, Plug And Play, No Driver Required, Easy To Use 14. Exquisite And Compact, Easy To Carry, Suitable For Travel 15. 3 Dpi Adjustable (80012001600), Self-setting Cursor Speed, Free To Meet Daily Work 16. Click And Scroll Low Noise, Rgb Light 17. Ergonomic Design To Prevent Wrist Pain 18. Built-in 400mah Lithium Battery, Fully Charged Battery Life Up To 300h, Long Standby Time, With Automatic Hibernation And Wake-up Mode 19. Easy Charging Via Usb Cable, No Need To The Battery