Features 1.2.4G wireless transmission technology, energy saving, intelligent connection. 2.There are 3 level of DPI can be adjustd, high resolution, which is up to 1600dpi. 3.Mute designed, no sound when you click, gives you quiet using experience. 4.Stylish appearance, slim and portable, easy to carry and store. 5.Add one-click desktop functionality to quickly return to the desktop. 6250Hz high rate return chip, faster data transmission, quick cursor positioning. Specification Condition: 100% Brand New Item Type: 2.4Ghz Wireless Mouse Material: ABS Optional Color: Black, white, gray, gold, pink, silver, blue Model: M103 Key Life: 5 Million Times (Mute Designd) Wireless Distance: Approx. 15m/49.2ft Work: Optical Battery Capacity: Built-in 500mah Battery (Rechargeable Lipo Battery) Project Type: Ergonomic Optical Mouse Resolution: 800, 1200, 1600(Default: 1200dpi) Operation Mode: Optical Rated Voltage/Current: 3.7V/ 20mA Power Supply Type: Rechargeable (Charge Time 2h, Working Time 150h) Buttons: 2 Buttons and 1 Round (Middle Mutton) and Dpi key and One-button desktop button(Only support for windows system) System Requirements: for Windows 98 / for Me / 2000 / for XP / for Vista / for Win 7 / for Win8 / 10/ for Vista / for OS X or latest Package List 1 x Mouse 1 x Wireless Receiver 1 x Charging Cable 1 x Instruction