Fangrui Product Details 1. Rapoo M300g 1600dpi 3 Keys Laptop Office Silent Wireless Bluetooth Mouse 2. Ergonomic, Fit The Curve Of The Palm, Not Tired For A Long Time, Comfortable To Hold, Exquisite And Compact 3. The Upper Cover Of The Mouse Adopts A Fine Matte Surface Treatment Process, And The Rubber Hole Design On Both Sides Has A Good Anti-slip Effect. 4. High-precision Invisible Light Tracing Engine, Accurate Positioning And No Frame Loss, 60 Million Single-axis Service Life, Real-time Fast Response, Lasting Feel 5. Anti-slip Grille Rollers For Smooth Sliding 6. 4-speed Dpi (600 1000 1300 1600dpi) Fast Switching To Meet The Operation Accuracy Requirements Of Different Games And Screens 7. The Use Of Silent Micro-motion Can Effectively Reduce The Use Of Noise, Suitable For Use In Libraries And Other Environments 8. High Efficiency And Energy Saving, Good Battery Life 9. Working Voltage: 1.5v 10. Wireless Transmission Frequency: 2.4ghz 11. Wheel Direction: Bidirectional 12. Connection Mode: Bluetooth 3.0 Bluetooth 4.0 2.4g Wireless 13. Working Mode: Photoelectric 14. Number Of Keys: 3 Keys 15. Operating Distance: 10m 16. Working Current: 50ma 17. Power Mode: 1 X Aa Battery (not Included In The Product) 18. Dimensions: 103.91x65.43x37.29mm 19. Weight: 83.2g