You like Transformers, don’t Yea? You have seen the Sony’s 1st introduce transformer mice which doubled up as a Skype phone. Now check out this Evergreen Navigator 365 optical mouse that can be opens up as a six button of game-pad.
So if u r playing the arcade games using the game emulator, so you can just transform it from your mouse. It is USB-powered with 1600 dpi resolution.
The Evergreen Mouse is only compatible with Microsoft Windows only and it is only for Japan, going for ¥2999 ($28 USD).