The Planet Waves Metronome and Tuner features an intuitive, easy-to-use multi-function metronome along with a precise meter-style tuner in a pocket-size design. The metronome comes complete with adjustable tempo, beats, and time division settings with a volume control and headphone jack. The instrument tuner features a sleek meter-style interface with adjustable frequency calibration, and a built-in condenser mic input jack for tuning acoustic and electronic instruments.