This is a great alternative to traditional metronomes. I could never stand using a standard metronome. For me it was like torture to have to listen to the sound it makes. I'm a classical/jazz guitar player so I don't need to have a loud sound to be able to keep correct time. I understand that most of the critical reviews are from drummers. Their arms are in constant motion and the loudness level of their instrument could drown out the effect. In my case, I even find it a bit too intense at even the lowest level, I also think that feeling it works better than hearing it. There's definitely a physical aspect. What also impressed me is the fact that the price was at the exchange rate with the US price. Being from Canada we often have to pay a premium on top of the US-Canada exchange rate. Often the price difference is never adjusted when the Canadian dollar surges upward in relation to the US dollar, like presently. Thank you Soundbrenner for a very convenient technological product for musicians.