Fangrui Product Details 1. M107 4-buttons 1600 Dpi 2.4ghz Wireless Rechargeable Mouse 2. 2.4g Wireless Transmission Technology, 10m Wireless Receiving Distance 3. Rechargeable Design, Built-in 500mah Lithium Battery 4. Third Gear Dpi Adjustment Design 5. Quiet And Elegant Office Wireless Mouse 6. High Resolution: Max 1600 Dpi High Resolution For Fluid Motion 7. Fashion Ergonomic Design: Ergonomic Design, Comfortable Grip, Stylish Appearance, Easy To Carry 8. Material: Abs 9. Key Life: 5 Million Times (mute Switch) 10. Wireless Distance: 10m 11. Work: Photoelectricity 12. Charging Cable Length: 24cm 13. Resolution: 800,1200,1600.(1200dpi Default) 14. Operation Mode: Opto-electronic 15. Rated Voltagecurrent: 3.7v18ma 16. Power Type: Rechargeable(charging Time 2h, Working Time 150h 17. Type: 2.4ghz Wireless Mouse 18. Buttons: 2 Buttons And 1 Round (middle Button) And Dpi Key 19. Product Weight:73.1g 20. Item Size:10.1x6.3x3.5cm Suitable For Everyday Use