2.4GHz wireless transmission freely moving in 10meters. Suitable for gaming, work and study. Plug and play, installs in seconds. Ideal for laptop and PC users at home or in office. Elegant and ergonomic design offers you extra comfort and look. Works on most of surfaces. 2 x AAA Alkaline batteries (included). This 2.4GHz wireless mouse enables you to work or entertainment more freely in 10m range. Delays, omissions and interference can be eliminated effectively by superior 2.4GHz wireless connectivity. Equipped with optical tracking 1600 DPI high resolution, you can enjoy the sensitive, smooth cursor control and precise tracking operations. Just plug the mini USB receiver into your computer, slide the power switch on, then you can start to use the mouse.