I bought three of these, because I have too many guitars (smile). One would not work at all. The second one is completely wacky, and reads about a note off (i.e. ROUGHLY an "E" note reads as "F" on the tuner). The third one I gave away, and I'm afraid to ask. I've been a guitar player for 50 years. I know how to use a tuner. I have tried everything, even fresh batteries. I would recommend staying away from these.

This is a good secondary tuner for guitar. My primary though is PolyTune floor pedal (or clip on) costing far more.

It has more capability than I really need. It does Banjo and chromatic and several other things but it uses the same button for on/off so it gets confused. And, I don't need to do anything but 440 and it can do between 430 and 450 but I often touch that button and have to scroll through that range to get back to 440

for the price this is a very good tuner.

Great little tuner. Works on all of my guitars and ukulele.

It works buy not very easy to use. I think it has a setting for every stringed instrument they make. You can tune your guitar, bass, banjo, refrigerator, microwave, violin and your dog. Flat even when you don't want to.

Intermittent function -- does not turn off/on on first attempt sometimes. But what can you expect for $7? When working it is easy to use

A great help for all string instruments. Precise and simple

Disappointing! Did not work well...My online app tuner worked better then this clip on.

don't lose the crummy instruction sheet, or you'll be all day setting up. unimpressive, but you get what you pay for.