Backbeater!

Backbeater is the worlds most advanced metronome for drummers. With the Backbeater Sensor, it knows the tempo youre playing. It can discreetly tell you a tempo you tap out, and it can store lists of tempos, for when youre playing live.Backbeater is a gift from heaven for drummers - Neil Conti, drummer for David BowieI never go on stage without it - Leo Costa, drummer for Matisyahu, Everlast