Professional Automatic Guitar Tuner

The Professional Automatic Guitar Tuner makes it easy to tune virtually any stringed instrument. Simply place it onto your instrument and press a button. It automatically turns your instrument¡¯s tuning machines until it achieves the perfect pitch. Features over 150 tuning options (including electric and acoustic guitars, mandolins, ukuleles, banjos and more in standard and alternate tunings), color display screen and built-in vibration metronome.