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This Tuner has a vibration sensor as well as a Mic (switchable), which allows for pitch detection, making the CTA7700 extremely versatile. You can tune alone in a loud setting using the vibration sensor, or tune with others using the Mic. Features include a Backlit Display, 4 Tuning Modes (Chromatic, Guitar, Bass, Violin), an Audible Chromatic Pitch Pipe, Flat Tuneing Feature, and Calibration from 430-450. This Tuner can clip to most instruments, Band or Orchrastra, as well as Guitar or Bass. A universal swivel joint allows for ample adjustment of the display.