As it says on the tin, it's a tuner and metronome - tunning accuracy is excellent when compared to other tuners I own (boss, qwik tune) mic and jack input both work equally well, the clip on pickup works as intended although I would never use that for tuning.
The stand is a little difficult to unclip but can be levered with a plectrum or strong fingernail, the quality of the casing plastic isn't anything to write home about, but it's sturdy and does the job and at the end of the day it cost less than £10 and get's you in tune, what more can you ask for?
The metronome is great, isn't just a straight 4/4, you can choose a whole host of different beat divisions so practically does everything you would need it to for normal practice, probably the only thing it doesn't do is specific weird time signatures but I'm there's a workaround I haven't found yet.
In short if you need a cheap, accurate and reliable tuner which also happens to have a diverse and handy metronome and you're making a thomann order anyway - throw this in your cart and you won't be disappointed.