[Audio version !#!amp!*! regular edition] is kind of an ordinary mouse， Kaka Ka， the 
  [Silent version] left and right buttons mute design， not like an ordinary mouse click when the powerful sound， the sound is very small， for a night owl family. 
To choose a voice of passion， to button to select silent version， there is always a good thing for you， it is necessary to use good

Wired mouse lines about 1.2M

Wireless mouse uses two AAA batteries