to go into full details on my PB comments:
I gig it pretty hard, throw it about (no pedal board) and so on. I play on average a couple of times a month maybe, and got the pedal last year (i think..!).
What can happen is chrome nut from the input jack can become unscrewed and this causes a plastic part beneath this nut to come off at the same time. the tuner is still usable at this point, but the input jack is then somewhat wobbly (as you might imagine). This happens every couple of months.
One solution would be to superglue or lock-tite the chrome nut on, and I might do this next time it happens. I notice the jack itself is not of the highest quality (but perfectly ok).
Clearly Korg make these for a price, but my old tuner (plastic Arion stage tuner - £40) worked and still works 100% without issue for 8 years or so.
So now you can all make a fair judgement. I don't think its a flimsy pedal - but I certainly wouldn't call it bombproof.