... 1 4.long service life,has head phones Eno green color unique metronome and practice drum 2 in 1 digital electronic drum ... pad Specification:Tempo range: 30~280bpmBeat: 0,1,2,3,4,5,6,7,8, ... 9Tolerance: Less than 0.5%weight: 930gColor: White/ ... color unique metronome and practice drum 2 in 1 digital electronic drum pad