A:AnswerI brought my Apple Watch 6 series into the store and they processed my trade-in and credited that amount to the new Apple Watch that I purchased.
A:AnswerYes, If you go into the ECG app on the watch it will take a 30 sec ECG when you place your index finger on the opposite hand to your watch hand on the crown. It does not show you a continuous ECG of your day. However you can have it set to alert you to irregular rhythms which it seems to talk the most about AFIB rhythms. so I am snot sure it it alerts to anything other then that. It will store you ECG rythen strips to your phone in your health app.
A:AnswerIt does (assuming you mean tapping together thumb and index finger of the watch-wearing hand). I've only used it so far to turn off my watch timer. It's very handy (no pun intended)!
A:AnswerNot for GPS version.
For GSM version(connectivity to carrier) you can use them same as GPS version but it has no cellular connection only bluetooth connection to your phone, but you can have a plan from your carrier and have separate phone number on your watches with internet not depending to your phone.
A:AnswerIt may be like the phones. They old charge to what you need to help extent the battery life. I could be totally wrong but that’s how it’s working with the phones.