I have just started to learn the violin, and needed a digital tuner. I bought an "ENO ET-3000", but could not get on with it. No proper instructions on how to use it. Once I received this product, I thought I would need a lot of time to get used to it, but it is very easy to use, and simple. It took me very little time to understand, and has very good instructions. Used alongside a good set of fine-tuners, it does not take long to get the instrument in tune. Recommended, especially for a beginner like me. I would give it 5 *, but the clip is not quite strong enough, as it often drops off...!! The ENO has a far better grip.