Feature: 1. 2.4G wireless transmission, 10m transmission distance, keep away from messy cable. 2. 3 adjustable movement speed(800-1200-2400DPI), easy to switch, accurate positioning, smooth operation. 3. Ergonomic design, the mouse fits palm, delicate hand feel, comfortable to use. 4. Adapt to a wide range of material surfaces, meet your daily office and entertainment needs. 5. Equipped with USB receiver, plug and play, compatible with desktop computer, laptop. Specification: Specification: Model: G862 Connection method: 2.4G Transmit distance: 10m(without barrier) Key number: 4 DPI: 800/1200/2400DPI Power requirement: 1*AA battery(not included ) System requirement: for Win 98/Me/2000/ for XP/ for Vista/ for Win7/Win8/Win10/ for OS X or later Rated voltage/current: 1.5V/24mA Item size: 11 * 6.5 * 3.8cm /4.33 * 2.56 * 1.5in Item weight: Approx. 51g /1.8oz . Package List: 1 * Mouse