Amazon.com: Amazfit GTR Mini Smart Watch for Men,14-Day Battery Life, Sports with GPS, 5 Satellite Positioning Systems, Fitness Health Tracker Heart Rate, SPO₂ Monitoring,5 ATM Water Resistance, Black : Electronics
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Amazon.com: Amzpas Metal Bands for Amazfit GTR 3 Pro GTR 3 GTR 4 GTR 2e GTR 2 Amazfit GTR 47 mm, 22mm Adjustable Stainless Steel Replacement Strap with Magnetic Buckle, Breathable QuickRelease Wristband : Electronics