I use it for six months, every day. I appreciate the versatility (use with all electric and acoustic instruments), its sensitivity and accuracy. Its visible diodes can easily check its agreement even placed several meters away from the tuner. It does not consume too much battery either ... The only (small fault) on the steps of the metronome, which are slightly larger by default. We must therefore look (a few seconds) the doc to see how to access a finer pitch (without a figure on the machine allows the process to guess). In short, it borders on flawless!
After testing the machine on all sorts of instruments (guitars, bass, basses, violins, piano), I could see that the no fault of the tuner (which will not even give an indication of the extreme octaves piano, physically false and tunable only by ear ... In a mixture of sounds, the tonic is well recognized (it is deducted with the third and fifth pure). I had to reference that old models larger and more specialized. None could hold a candle to this little machine.
The price / quality ratio is excellent. In fact, I immediately bought a second copy just to be always and everywhere!