I use it for at least three years. Nothing to say negative, but good. You plug the electric guitar and go for tuning. It is clear, simple and effective. I had not tested before. The value for money is good for a sustainable product that seems to me if used for what it is intended! In retrospect I think having a tuner in the form of pedal permanently connected in his pedal set is not bad at all. Once I plug in and I unplug often. This is the only downside, that being said I could also leave it permanently on the line but you have to stoop when to initiate and standing on the ground under the screen seems to me not very readable so ...
Despite this reservation I put 10, it's worth.