WSM-001A Metronome Weight: 80g Dimensions: 62(W)x15(D)x94(H)mm Tempo range: 40-208bpm, Beat: 0, 1, 2, 3, 4, 5(3+2), 5(2+3), 6 Tempo precision: 0.3% Metronome sound: Electronic sound Reference tone range:4C-4B Power supply: 3V(2xAAA)batteries