3in1 Metro-tuner with fully function tuner metronome tone generator Tuning Item: ChromaticTuning Mode: Auto or ManualA4 Frequency range: 410-450HZMetronome Tempo: 30-248BPMBeat: -/4, 1/4, 2/4, 3/4, 4/4, 5/4, 3/8, 5/8, 6/8, 7/8, 8/8, 9/8Demo: 1A-7ASize: 103x66x15mmBattery: 2xAAA 3in1 METRO-TUNER