it's a nano, gen 2. i just got it earlier this year.
thing is, it still works. the dumbbell apparently only caved in the metal housing right near the connector. of course, that means i can't charge or update it. hopefully the connector pins are still in tact, but i can't tell. i don't know how i can get into that small space and push out the metal back into shape at all, let alone without damaging the pins.
i don't suppose this kind of fuck-up has any kind of warranty coverage...