M107 4-buttons 1600 DPI 2.4GHz Wireless Rechargeable Mouse 1. 2.4G wireless transmission technology, 10m wireless receiving distance 2. Rechargeable design, built-in 500mAh lithium battery 3. Third gear DPI adjustment design 4. Quiet and elegant office wireless mouse 5. High resolution: max 1600 DPI high resolution for fluid motion 6. Fashion ergonomic design: ergonomic design, comfortable grip, stylish appearance, easy to carry 7. Material: ABS 8. Key life: 5 million times (mute switch) 9. Wireless distance: 10m 10. Work: Photoelectricity 11. Charging cable length: 24cm 12. Resolution: 800,1200,1600.(1200dpi default) 13. Operation Mode: Opto-electronic 14. Rated voltagecurrent: 3.7V18mA 15. Power type: rechargeable(charging time 2h, working time 150h??? 16. Type: 2.4GHz wireless mouse 17. Buttons: 2 buttons and 1 round (middle button) and Dpi key 18. Product weight:73.1g 19. Item size:10.1x6.3x3.5cm