Great-- most of the time
I got this metro/tuner on sale for $10 which is a fantastic deal. However, if it has been over 30 min. since I last turned it on, I have to take the batteries out and put them back in so that it will turn on. I am not sure if it is just the cheap batteries it came with, or the machine that is the problem. The other thing is that the metro. sound is too quiet and if I am playing the piano I can't hear it. Everything else works fine.