This item is a wireless mouse. It has DPI levels to meet your different demands, clicking the DPI button to chose the level. Its ergonomic design allows you to stretch your hands nearly flat to and forward and it fits nicely into the palm of your hand. Feature - Color: Blue. - Material: ABS. - Size: 11.2 x 5.7 x 2.3 cm. - USB port: USB 2.0. - Interface: 2.4G. - Compatible with Windows XP, Vista, Win 7, Win8, Win10. - Up to 10 meters of operating distance. - Maximum resolution: adjustable DPI meet your various need. - It will automatically go into sleep mode if there are input infromation for 5 minutes to save the power. You can also turn off when you don’t use it. - Lightweight, ergonomic and compact design makes it comfortable for long time use - The mini receiver can be inserted permanently into usb port without worrying about damaging or . Package list: 1 x Wireless Mouse