What Apple Watch Do I Have? Updated January 18, 2018 04:46 Follow instructions here: https://support.apple.com/en-us/HT204507 Related articles Is KardiaBand water resistant? How do I get a clean signal with KardiaBand? Does the KardiaBand use my watch's battery? What Countries is the KardiaBand sold in? How tight does the KardiaBand need to be on your wrist?