It does the job, for its price. Sadly, it's quite poor at sensing the pitch when trying to tune the guitar with it - it seems to have a bit of a "lag", much more than I'd except, also had some erratic behavior on certain strings. Overall, I'd recommend throwing in the extra cash to get a "Sn*rk" (not sure if I can mention the exact brand name, but it's also available on Thomann). I have one of those and it never fails me.