Features: 2.4G wireless technology, up to 10m transmission distance, stable connection. 3 adjustable DPI(800-1200-1600DPI), easy to switch, accurate positioning, low delay. Ergonomic design, the mouse fits your palm and fingers, comfortable to use, not easy to fatigue. It will enter into sleep mode according to your usage, energy saving. Equipped with USB receiver, no drivers required, plug and play. Built-in 500mAh rechargeable lithium battery, long endurance time. Specification: Type: 2.4G wireless mouse Model: M107 Color: Black/White(optional) Material: ABS Wireless distance: About 10m(barrier-free) DPI: 800-1200(default)-1600DPI Key number: 4(left/right/roller wheel/DPI switch) key life: About 5 million times Battery capacity: 500mAh Rated voltage/current: 3.7V/18mA System requirements: Windows 98/Me/2000/XP/Vista/Win7/Win8/Win10/Vista/Mac OS or latest Item size: 10.1 * 6.3 * 3.5cm /3.98 * 2.48 * 1.38in Item weight: Approx. 73g /2.57oz Packing list: 1 * Mouse 1 * Charging cable