Specifications: *Bluetooth Version: Bluetooth 3.0 *3 DPI Levels: 800/1200/1600 *500Mah rechargeable battery capacity *Operating Range: Max.32.8FT *Dimension: 4.45″x2.3″x0.9″(LxWxH) *Net Wight:45g *Buttons: Left/right click, scroll wheel, DPI button, on/off switch, Bluetooth connection button. What’s in The Box: 1 x Slim Bluetooth Mouse 1 x User Manual 1 x USB cable Installation Guide: Step1. Charge the mouse: *Run out battery …