Features: -Scroll mouse whell -PS/2, USB or U+P connector -256 ID channel -Operating frequency: 2. 4GHz -Operating effective distance: >8m -Power consumption: 2 AAA batteries -400 or 800 DPI mouse resolution -Rechargeable battery function -Compatible with Windows 98/ME/2000/NT/XP -The mouse has the touchable function at the bottom of mouse