Features: 1.Metronome and Tone Generator, Measure indicator makes practice easier. 2.Pre-beat function gets the player ready to start the song. 3.Vertical metronome (downbeat indicator) gives a more direct view of the beat. 4.Using encoder to control speed makes the operation simpler and faster. 5.Auto-off function. The machine will automatically turn off if there is no operation for 5 minutes. Saves settings upon power-off. Specifications: Tempo range: 30~250bpm Beat: -/4, 1/4, 2/4, 3/4, 4/4, 3/8, 6/8 Tempo precision: ±0.3% Metronome sound: Electronic sound Power supply: 3V(2xAAA)batteries or DC 6V (not included) Sizes:approx. 70(W)x23(D)x115(H)mm Weight: approx.100g Physical object with logo