I am not sure PCB identification is on-topic for this site, please let me know if it isn't.
My wife found this PCB in her bag. She thought I had given it to her, but I do not recall that at all. Does anyone know what it could be from or for?
It is around 31 by 37 mm in size. On on side it has four pushbuttons and a small blue led, which blinks at different frequencies when different buttons are pushed. On the side it has what looks like a micro-USB connector.
On the other side it has two small IC's, one with 14 legs and H3-100 written on it, the other has ATMLH434, 16CM Y, 4W2601B, and a search brings up some shopping sites with little information, but there are IC's with the same first line that seem to be eeprom chips.
The PCB itself says 215BHS-1.
Does anyone have any idea what this could be? Thanks!