Tolerance: 1cent Weight: 20g Dimension: 60(L)¡Á43(H)¡Á17(W)mm Power:CR2032 Battery 1 piece Power: Connect to the amplifier Color: Black. -----Metronome----- Beat:0.1.2.3.4.5.6.7.8.9 Rhythm: Tempo:30-250 bpm -----Tuner----- Tuning Item:Chromatic,Guitar, Bass Semitone flat:b,bb A4 frequency:410-450Hz Tuning range:1Eb-8C.