3 in 1 function good drumer assistant ,nice , 1.Metronomea.Rhythm: b.Beat:0,1,2,3,4,5,6,7,9.c.Temporange:30,31,32```````,278,279,280. d.Tap tempo function. 2. Counting:set time is adjustable from 5seconds,6seconds````to 99seconds3.Volume:207mm*206mm*29mm4.Power supply:2* ‘AAA’ battery or 5V DC power.5Weight:500g.colour black ,silver Practice Drum pad