Model: Oker Wireless Mouse M825,Type: Bluetooth & 2.4G Double Channels Wireless Mouse,DPI Settings: 800 / 1200 / 1600 DPI,Power Efficiency: Five times power-saving compared to ordinary wireless mice,Transmission Distance: Up to 20 meters,Buttons: 6 buttons (silent ),Connection: Plug-and-play (no driver required),Battery Type: AA batteries included,Adjustable Speed: 3 levels (max 1600 DPI),Design: Lightweight, ergonomic design,Colors Available: Pink, Green, White, Black,Package Size: 19 x 11 x 7.2 cm,Features: On/off switch