Meet Roadie 2: an automatic guitar tuner that uses vibration detection to tune your instrument fast. It is compatible with guitars, ukuleles, banjo, and other stringed instruments. You get a list of 20 preset tunings to choose from but can create your own. The device fine-tunes your guitar in seconds with precision.
The device works on its own and has a motor that rotates at 60RPM. A version for tuning bass guitars will also be available.