Really good quality. I use it everyday for study and rehearsal and of course for concerts. It never abandoned me. After more than an year of intense use it still goes great!
From the construction side it's made of plastic, and at first it made me think it would breack easily but now I can say it's really well made and the plastic is of good quality, I don't think it's going to abandone me that easy.
It has several instruments specific settings but I just use the guitar setting and it work fine.
The real plus is the cable for charge and it also has a long life battery. This is the real thing! Even if I have a tuner on board of my guitar and one more and very precise in my pedalboard, when it comes to acoustic concerts the clip has something more usefull that I always go for it, and I never have the nightmare to see the light shut of. When you play in front pf people as a job these are the little things that stats to count.
The only cons i can consider is the front glass that's actually made of thin pvc and one day I forgot the clip on, during the transport inside the guitar bag, I found a breack on the glass. It doesn't affect the use but you know, it was better without. So my 2cent is to put just a little more attention holding it in some safer place.
All in all: really good product!