I have been a Peterson Strobe user since 1976, when my band acquired a Peterson 400. I still have it, and it works flawlessly! This is my third Stroboclip. I had one that failed due to being unprotected and cracked the screen. I lost the battery cover on the second, which Peterson replaced at no cost. Their customer service is top-notch! As for the new Stroboclip HDC, the first thing about it is IT'S RECHARGABLE! No more batteries! I play both 6 and 12-string acoustic guitars. There is a setting specifically for 12-string, which makes tuning a lot easier. The biggest problem is tuning the B strings, which are the main culprit in tuning a 12-string. The idea of the colored screens makes it adaptable in almost any situation. I still leave it on the default "orange" colored screen. I love tuning with this thing! I have become a tuning fanatic because of my experience with Peterson. It is so sensitive that it picks up the vibrations on my guitars from the PA speakers. It came with a charging cable, an instruction sheet, and a great protective case. The only complaint that I might have deals with how long the recharge lasts compared to using batteries. Otherwise, for the acoustic players who are focused on playing in tune, this is a better solution than other budget tuners, such as Snark or D'Adarrio clip ons.

A great product! I highly recommend it not only to acoustic players, but also to any guitarist where being in tune is important.