The beat of this metronome is irritatingly loud, to the point where it distracts from the music you're trying to play. The LED display bouncing-ball pulse is muddy and difficult to tell when it's trying to beat. There's no volume control, only a mute button. It looks like it has a dial for bpm-adjustment (an extremely desirable feature) but it doesn't.There is no power switch, resulting in terrible battery life.A complete waste of money.For a budget metronome, I suggest you check out the Korg MA-30, or if you want the dial (and can live without volume control) then the Matrix MR500 or Seiko SQ50 is a good choice.