The Roadie 3 by Roadie Tuner is an automatic string tuner that is twice as fast as its predecessor and comes with over 150 tunings to choose from. It includes a built-in vibrating metronome and a powerful winding feature that lets you restring and tune in one single step, quickly and effortlessly tuning your instrument no matter what tuning you choose. You can even customize the reference pitch and tune with a capo on. It can tune any string instrument with a guitar machine head in just seconds, including electric, acoustic, classical and steel guitars, ukuleles, banjos, mandolins and more.