Rapoo MV20 Wiress Vertical Mouse 1. With an ergonomic angle of about 60 degrees, the arm is closer to a natural raxed state 2. The spinnaker shape, the curve is round and full, plus the thumb groove on the side wing, the grip is comfortable 3. Riable 2.4G wiress connection, stable signal transmission, 10m transmission distance 4. High-performance engine, multi-surface application 5. 3 levs of DPI, one-key switching to meet the accuracy needs of different screens 6. Vertical grip, easy office work 7. Photoectric resolution: 1000 DPI 8. Interface: USB 9. Buttons: left button, middle button, right button, forward button, back button, DPI switch button 10. Transmission mode: wiress 2.4G 11. Features: mute button, durable, high-precision engine 12. Battery life: about 9 months 13. DPI: 800/1200/ 160014. Working method: photoectric 15. Power supply mode: 2 x AAA batteries (need to buy by yoursf) 16. Packing list: mouse, receiver, battery, manual 17. Size: 7.6x11.7x6.9cm 18. Weight: about 90g