I got this tuner two weeks ago thinking it might help keep my guitars in tune but got very disappointed. Initially, I was pleasantly surprised by the packaging, which gave it a "high-end" product feel. Right out of the box the quality of the build was good- it feels sturdy and has a nice matte finish (though the buttons and LEDs do remind me of gadgets from the 90s - not really my taste). This is where the good stuff ends. It is poorly designed as a tuner and doesn't fit the larger Les Paul pegs. In terms of performance, sometimes it tunes correctly but way too often it keeps on jumping up and down around the note, not stopping at the correct position. I did some research to see if I can fix this but couldn't find any tips or even the possibility to update the software. The device turns the pegs too quickly in a jittery manner and jumps from one position to the other causing my high B and E strings to snap. It's a tuner which doesn't tune - very disappointing!!!