Features: 1.Wireless thin and light silent mouse, the left and right buttons using a silent micro?motion design 2.Stable long?distance wireless transmission, 2.4GHz wireless technology provide reliable connection within 360 3.The ergonomic support and fit of the palm make the wrist, palm and back of the hand move in a comfortable state 4.The wheels are smooth and fluent. The optical sensor can be used on a variety of surfaces, very practical 5.Adopt for Nano receiver, plug and play, easy to carry. Built?in memory, no need to code with smart connection specification:Item Type: Wireless Mouse Working Method: Photoelectric Operating Distance: Approx. 10meter / 32.8ft Material: ABS Wireless Technology: 2.4GHz Mouse DP1: 3 Level DPI adjustment Optical Resolution: 1600dpi Supported Operating System: For Window7/8/10 / Android3.2 / OS X 10.8 Battery: 2 x AAA batteries (not included) PackageList: 1 x Mouse 1 x USB Head