This digital Korg metronome features a special resonance chamber with high-output speaker delivering pleanty of volume for all practice applications. Tempo range from 30 to 252 beats per minute....choose either individual FULL STEP or PENDULUM traditional metronome steps. With 19 different built-in beats you can practice to more than just a click track. Choose from 3 different PCM metronome souds to make practice more realistic and fun. Convenient tap function lets you set tempos quickly and easily. Aids tuning with 12 reference pitches, C4 to B4, that can be calibrated from 410Hz to 480 Hz. Equipped with an earphone jack and volume control.