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Amazon.com: Amazfit GTR 3 Smart Watch for Men, 21-Day Battery Life, Alexa Built-in, 150 Sports Modes & GPS, 1.39”AMOLED Display, SpO2 Heart Rate Tracker, Water Resistant, Fitness Watch for Android iPhone, Grey :
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Amazon.com: Compatible with Amazfit GTR 4 Bands, YOUkei Stainless Steel Metal Replacement Strap Bracelet Compatible with Amazfit GTR 2 / GTR 3 / GTR 3 Pro / GTR 4 / Falcon Smartwatch (Black) : Cell Phones & Accessories
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