built-in USB retractable mouse

5).Ultra-high frequency optical positioning technology can capture every point accurately;the resolution is up to 1000DPI which can meet professional graphics demands;

4).Mechanical and electric lives of key-presses are more than 1million times ;connection wire tensile strength is more than or equal to 5KG.

3).DPI is 800-1500;the mouse can move on the surfaces of vast majority mediums freely(except high-reflective surface like mirror)  

another disign:with external PS/2 or USB wire ;

2).one design :the USB retractable wire is builted in the mouse ;

1).mini opitical mouse which is carry-home and matching every laptop;

mini opitical mouse;the USB retractable wire is builted in the mouse ;another type is with external PS/2 or USB wire