Daddario PW-CT-12 Micro Headstock Tuner

It's about the smallest clip tuner in existence, it's totally unobtrusive, you can stick it on the headstock and just leave it there forever. I'm using these on all my electric and acoustic guitars, also I've used it on my bass ukulele in the past.

The pros:
-small footprint
-quicker turn-on and turn-off time than the previous version, PW-CT-10
-quick response
- it's reasonably accurate for the practical purposes. My Korg CA-50 seems to be more precise.
- reliability. I've had two of the previous version for what, eight years now, and never had issues with them, if that's any indication.

The cons:
- tuning sensitivity. It sometimes struggles with the B string on a guitar, shows it as F#. And while it is possible to use this thing on a bass, you'd better use 12th fret harmonics to tune it. It doesn't pick the low B up on my five-string.
- viewing angles could be better. Sometimes the shape of the headstock prevents you from turning the screen directly at you, and it gets hard to see what's going on. The previous green version has better angles.
- it's a touch expensive for what it is.

Overall, it's a good, very small tuner. There are better options if the size isn't the primary concern.

I've had quite a few tuners in the past but this one might be the smallest one yet, don't let that fool you though, although it's small you can see the screen perfectly and its bright enough (at least for indoor usage), you can also make the screen vertical instead of horizontal.

There's a little tab on the back that you have to press to adjust the height of the clamp, i was worried that it wouldn't stay in place when i ordered the tuner but turns out that it holds up perfectly fine.

When it comes to tuning it works just as good as any other tuner i've tried, the ones around the same price and even slightly more expensive, although i'm sure that more expensive tuners will be a little bit more precise.

Design:
The most eyecatching feature is its small and compact design. I do not like big ugly designs of tuners attached onto headstock, so i used a tuner pedal until i saw this tuner. That one is just hiding behind headstock and you cannot break it accidentally.

Screen:
It is really small but has a descent screen. I have been using it at home and i can say the brightness is very good. (What about using outside? Dont know honestly...)

Accuracy:
That clip tuner is not as sensitive and accurate as the tuner pedal i used. But its OK for such small and cheap solution.

Quality:
Clip is not strong. It seems as if it will be broken easily. I wish it was metal. But it is plastic unfortunately.

Closure:
When i saw this small design, i checked the price and ordered immediately. At the moment i am using it heapily, it is so handy and i eliminate one pedal from the pedalboard.

Surprisingly accurate even in moderately noisy environment and it's so small it's so convenient to take around and quickly tune or verify tuning.

Pros:
+Small size factor makes for low profile visibility and makes it convenient to take along
+Color display (angle of display can be rotated to adapt orientation of the device on the headstock)
+Works in moderately noisy environment (Instruments in the background, people chatting, etc.)
+Nitrocellulose lacquer friendly
+Chromatic tuner

Cons:
-Integrated metronome is limited to visual only