Ever have a product pi** you off for the right reasons? This tuner made me angry. In one day, I was better tuned, better intonated than ever before. Easy to get it exactly where I wanted it. Played with the sweeteners, downloaded a few. I was angry because I didn't buy this years ago. Best clip on tuner I've ever used by a country mile. It's not just the accuracy. Sure, +/- 0.1 cent looks good on paper, but it's the ease of using the Strobe to dial it in perfectly, the user interface if you will, that allows you to actually use that accuracy. I found it so useful compared to other tuners I had used that I was genuinely angry I hadn't gotten one years ago. I knew they were good, I didn't realize HOW good. Don't let your future self get angry at you now, buy one. I honestly don't think anyone makes a better clip tuner. I can't even imagine how one could be better. A lot of superlatives about to be dropped, but this isn't hyperbole. In a quarter century of playing, this is the most accurate tuner I've used. It also appears to be the best built. It's also the easiest to use, especially fine tuning. And, it is also the most useful. Any category I can think of to judge a tuner by, this little thing lands on top.