Red Snark SN-2 Chromatic Clip-On All Instrument Tuner and Tap Tempo Metronome with Assorted Guitar Pick Sampler Snark SN-2 Full Color Display rotates 360 degrees \u201cStay put\u201d clip Tap Tempo Metronome Transpose Feature Pitch Calibration (415-466Hz) High Sensitivity Vibration Sensor Features extended frequency range for all instruments Choose internal mic or vibration sensor