A:AnswerI had the same problem when I traded in my old Apple Watch. I just chose a close model and when I brought my watch in they had no trouble giving me the full amount allowed.
A:AnswerAccording to Apple, it does not. Whoever wrote "LOL" needs to get a life. The O2 sensor is important to many, although it may not be as reliable as the kind you put on your finger.
A:AnswerS/M: Fits wrists measuring 130–180mm (about 5.1–7.1 inches). This shorter range suits smaller to average wrists, providing a snugger overall fit.
M/L: Fits wrists measuring 150–200mm (about 5.9–7.9 inches). This offers extra length for medium to larger wrists, with more adjustment holes for comfort.
The overlap (150–180mm) allows flexibility—opt for S/M for a tighter feel or M/L for looser. Apple recommends measuring your wrist with their printable tool for precision. Both sizes attach to the 42mm case identically, maintaining compatibility across Series 10 bands
A:AnswerGo to Apple and download the band sizing page. It is fairly easy to figure out your band size then.
https://www.apple.com/shop/Catalog/US/Images/bxxd/size-guide_CA.pdf
