Amazon.com: Amazfit Zepp Z Smart Watch for Men, Health Fitness Tracker, Alexa Built-In, 15 Days Battery Life, Blood Oxygen, Heart Rate, Sleep & Stress Monitoring, AMOLED Display, for Android Phone iPhone(Brown) :
Amazfit GTR 47 mm - Amazfit US Official Online Store
Amazon.com: AK Leather Band for Amazfit GTR 4/ GTR 3 Pro/ GTR 3/ GTR 2e/ GTR 2/ Amazfit GTR 47mm, 22mm Quick-Release Adjustable Strap with Metal Buckle for Women Men, Soft Replacement