Features: 2.4G wireless transmission technology provides reliable connection within a range of 10m,allows you to say goodbye to the wired shackles and operate more freely. Adopt high precision optical engine, accurate positioning, up to 1600DPI, to meet the dailyuse of office and game entertainment. Adopt ergonomic design, the smooth and comfortable shell fits the hand curve, providescomfortable hand feel, effectively prevents from wrist ache in long time use. This mouse creates a quiet and comfortable environment, whether you are in quiet office orstudying late at night in the library. Slim design, lightweight and portable, you can easily put it in a bag or pocket, moreconvenient to use. No driver requied, plug and play. Specification: Name: Wireless mouse Material: ABS Color: Black/White/Pink/Blue/Green(optional) Transmission distance: 10m DPI: 1600DPI Number of keys: 4 keys Battery: 2 * AAA batteries(not included) Item size: 11.5 * 6 * 2.2cm /4.53 * 2.36 * 0.87in(L * W * H) Item weight: Approx.50g /1.76oz Packing list: 1 * Wireless mouse 1 * USB receiver