I may be wrongly star rating this. I bought a really cheap electro acoustic cutaway 12'er from Gear4music, (the finish and fit of which, for the money, has to be seen to be believed!!!)
I had a good quality 'trigger capo', but alas it didn't really work on the 12 string and I wanted to play the intro to Hotel C on the 7th fret (as the recording)- (Em B7 Dsus2 Aadd2/9 C G Am B7 - try it).
This one does . . . .
However, and this may be a string issue - (a £75 guitar is hardly gonna have d'Addarios or Martins r even my old favourite Cathedrals!), I find the top E strings (11/12) need a slight re-tune when the capo is first used.
I have now got a decent set of strings and just need the time to re-string it.
In summary, once adjusted correctly via the thumb screw to suit the particular neck, it does what it says it will do, and with the unique 'lever clik' arrangement is pretty quick in use (except for the tuning issue, which may or may not resolve itself, which if it does would make it 5*