Apparently some sort of cellular watch? I don't really know. Definitely needs a new battery. This one is swollen. I don't have any clue what I have here. Tried doing some research to figure it out. I assume the spot inside the watch is for a sim card. This is untested. I blurred the numbers in the photos for safety reasons. I don't really know if it matters or not. I imagine this is Android based but I don't know. I had to put something in order to list this. 38 mm wide and 40 mm long. It's in pretty good shape with no scratches, dings, etc. Thank you for looking and have a nice day