Snark SM-1 Touch Screen Metronome Snark Touch Screen Metronome World's First TOUCH screen Metronome has 6 sounds, 15 Rhythms, Tap Tempo, Pause/Play Feature, Extra Loud Speaker, Variable Volume, 40-250 Beats per Minute Speed, and Jack for Smart Phone Ear Buds. Perfect accessory for any musician. Extra Loud Speaker or Use Smart Phone Ear Buds