The Planet Waves S.O.S. Strobe Pick Bass Tuner is tiny, easy to use and accurate. I purchased several of them and was initially amazed at how good of a tuner they are. After almost a year I've gone through five of them, though. While I do use them frequently and on a daily basis, I haven't abused them at all. Even so, when I run out, I'll be buying a few new ones. They're perfect in your guitar case as cheap, accurate backups. Also the best affordable tuner I can think of to tune acoustic guitars without electronics.

I wouldn't rely on them as a full time stage tuner unless you want to replace them frequently. Overall, a good value for a very useful tool. I'd be willing to pay more for a more durable, well lit chromatic version.

I like this "pick" so much. I paid the same as for a regular pick that thick, lol,.. I took a little while the first time because I was exploring the pros and cons. I think there is only pros. Great value, cool "keychain", effective, simple,... Well, maybe too simple. What I miss is a calibration feature since I play along with bamboo flutes at the outdoor,a 430-450hz range would be really appreciated, but I'm not complaining nor I'm saying it's a con. You can't get a full featured tuner for that price. The only two things you have to have in mind are. First, since you can't see the string selection when it's too dark, you'll have to have it memorized. That's why I adopted the habit of using the same off position when done(between C and B selections), so the next time I'll know what's going on even in the dark. The latest version comes with lighted letters though. Second, you'll have to coarse tune by ear at first and then fine tune with the S.O.S. because it wont tell you what note it is and you can't see any movement if the string is far from the right tone. It makes a nice gift also. A good buy overall.

this little guy is accurate enough for you to tune your bass in a matter of seconds, its easy to use and its cheap you can't help but be impressed it doesn't crap out like many other tuners after a week or so it keeps going and going and going and going. if you get the chance buy it.

The Planet Waves Strobe Tuner is a must have for every guitarist's bag O toys. Very easy to use (even in darkness and noisey environments). Talk about durability, I accidentally left it in my jeans pocket and they went into the washer and dryer and when I opened the drier door - there was my little tuner - turned it on, rotated the dial thru a time or two and it still worked great (and still does, a year later - even with the same battery.) The only thing that it really needs (are you listening Planet Waves?) is a small metal loop so you could clip it onto a keychain - then it would be perfect! Get one (or a few!)

Checked this tuner with the Pederson Strobe-every bit as accurate to tune the bass with-of course the only drawback is you can't strobe the bass and be accurate-but it is certainly worth more than what I paid for it-free with strings!