A:AnswerNo, I don't think so. Here's a link to the GTS manual
https://files.bbystatic.com/UNOrV9GUIqxa2HmOZwJB7g%3D%3D/b7b2efd5-694d-405f-8b6c-acd7550da3fa.pdf
A:AnswerI don't know if they make watch for that, u might try an apple watch for that, that sounds like a question for your doctor,.Mayne he could recommend a smart product.
A:AnswerNo the GTS doesn't track REM sleep only deep and light, however the GTS 2, 2e and 2 mini does and track REM, deep and light sleep and transfers detailed results to the Zepp App for your convenience
A:AnswerYou will have to do 3 things :
-On the Zepp App --> Profile --> GTS--> More--> Enable Emails--> turn on
- Turn On Notifications for the Emails App on your Phone so the watch can mirror your Email Notifications
- Then make sure your email notifications are set Show Previews to always when using an iPhone