Amazon.com: Amazfit T-Rex Pro Smart Watch for Men Rugged Outdoor GPS Fitness Watch, 15 Military Standard Certified, 100+ Sports Modes, 10 ATM Water-Resistant, 18 Day Battery Life, Blood Oxygen Monitor, Black : Electronics
Amazon.com: Amazfit GTR 2 Smart Watch for Men Android iPhone, 14-Day Battery Life, Alexa Built-in, Fitness Watch with GPS, Bluetooth Call, 90 Sports Modes, Blood Oxygen Heart Rate Tracker, 5 ATM Water