Description_x005F_x000D__x005F_x000D_This item is a wireless mouse. It has 3 DPI levels to meet your different demands, clicking the DPI button to chose the 800/1200/1600 level. Its ergonomic design allows you to stretch your hands nearly flat to move up and forward and it fits nicely into the palm of your hand._x005F_x000D__x005F_x000D_Feature_x005F_x000D__x005F_x000D_- Color: Black_x005F_x000D_- Material: ABS_x005F_x000D_- Size: 12.2x5.7x2.3cm/4.8x2.2x0.9inch_x005F_x000D_- USB port: USB 2.0._x005F_x000D_- Interface: 2.4G._x005F_x000D_- Rated Current: 6mA_x005F_x000D_- Working Frequency: 2.402-2.480GHz_x005F_x000D_- Transmission Speed: 1-2M/s_x005F_x000D_- Compatible with Windows XP, Vista, Win 7, Win8, Win10._x005F_x000D_- Power supply: 2 x AAA battery (not included)._x005F_x000D_- Up to 10 meters of operating distance._x005F_x000D_- Maximum resolution: 1600 DPI, and 3-level adjustable DPI: 800/1200/1600 DPI, meet your various need._x005F_x000D_- It will automatically go into sleep mode if there are input infromation for 5 minutes to save the power. You can also turn switch off when you don& 39;t use it._x005F_x000D_- Lightweight, ergonomic and compact design makes it comfortable for long time use _x005F_x000D_- The mini receiver can be inserted permanently into usb port without worrying about damaging or losing it.Packing list1 x Flat Wireless Mouse_x005F_x000D_1 x Mini Receiver