... 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 ... the elasticity of real drum 3.Metronome and practice drum 2 in 1,convenient to use and carry 4.full beat and rhythm ... ,ringing timbre 5.headphones can be used to avoid interference. Eno green color unique metronome and practice drum 2 in 1 digital electronic ...