Wireless technology: 2.4G Wireless with USB receiver Wireless distance: 10-15m Product Size:133*55*12mm Weight: 755g Resolution: 800-1200-1600 dpi Operating cycles: 1,000,000 cycles Battery:2*AAA dry battery(Not included) Material: ABS Plastic and silicon System requirement: Windows 2000/ 2003/ ME/ XP/ Vista/ Win 8/ 10/ MAC OS/ Linux How to use it ? 1. Insert the battery into the mouse. 2.Bent the mouse, when you hear a sound,it means the mouse is bent into correct position. The blue light will shake,and the mouse is turned on . 3.Insert the USB receiver to your computer, then the mouse will work directly . Note: 1.This is 2.4G wireless mouse ,need connect via USB receiver . 2. This mouse can not be used on Win7 and XP system. 3. The mouse must be bent to the right position,otherwise it can not turn on . 4. This is not original Microsoft mouse .