Mini Small Wireless Mouse for Kids Children 3-7 Years Old Child Size Optical Portable Mini Cordless Mice with USB Receiver for Laptop Computer (Orange) Mini small computer mouse for kids 3-7 years old only,child size dimension 3.23*1.97*1.26inch,net weight: 1.4 oz Optical wireless mouse for laptop with USB receiver,Powered by 1*AAA battery(Not Included),1600DPI,3 buttons The USB receiver is placed in the bottom of the mouse;To find out the battery slot,please open the top cover gently from the back side 2.4GHz fast wireless transmission,operation distance is up to 10 meters;Compatible with Windows XP, Vista, Win 7, ME,2000,Mac,Linux and more If not connect,please turn off the mouse switch,pull down the USB receiver,then plug the USB receiver and turn on the mouse switch again,press the 3 buttons(left button,right button,scroll wheel) together at same time for about 3-5 seconds