The Tune Tech TT-500 clip on chromatic tuner is designed to tune electric and acoustic guitars, basses, violins, banjos, mandolins and more without interference from ambient room noise, all without the use of wires, microphones or pickups. Tuning in noisy environments is a easy because the unique, flexible clamp actually "feels" the instrument's vibrational energy instead of relying on sound. And, the swivel allows a perfect view of the back lit display. The best part is that this amazing quality tuner costs a fraction of what other similar tuners cost.