Amazon.com: Amazfit GTR 2e Smart Watch, 24 Day Battery Life, Alexa Built-in, Fitness Tracker with GPS & 90 Sports Modes, Blood Oxygen Heart Rate Tracker, 5 ATM Water Resistant, for Men Women
Amazfit GTR 4 GPS & Heart Rate Accuracy Test During Workout || Fitness Review - YouTube
Amazfit GTR unveiled in 42mm and 47mm versions, has up to 24 days battery life - GSMArena.com news