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Amazon.com: Amazfit T-Rex Smart Watch with GPS, Military Outdoor Sports Watch for Men,20-Day Battery Life, 1.3'' AMOLED Display,5 ATM Water Resistant, 14-Sports Modes, Heart Rate Sleep Monitor, Rock Black : Electronics
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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
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