This 2.4G Mouse offers 3 DPI levels for choice with max one up to 1600DPI and supports auto sleep mode to save energy. Feature: Wireless Connection Plugging in 2.4G receiver, it offers stable connection and free you from twisting cables. Wide Compatibility It is compatible with most devices with USB interface. Energy Saving It will enter into sleep mode according to your usage. 3 Adjustable DPI Levels There are 3 DPI levels --- 800, 1200, 1600. Free to switch. It offers you a pleasant sensation of higher speed, less delay and more correct location Ergonomic Design It is lightweight, enabling you to use it for a long time without fatigue. Plug and Play No drivers required, easy to use. Specification: Working method: 2.4Ghz Wireless Technology Power supply: 1 * AA battery ( Not included) Color: Black, White, Yellow, Pink (Optional) Item size: 105* 33* 62mm/ 4.13* 2.44* 1.3in Item weight: 46.1g/ 1.63oz Package weight: 83.9g/ 2.96oz Package size: 152* 120* 35mm/ 5.98* 4.72* 1.38in Packing list: 1 * Mouse 1 * USB receiver