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Amazon.com: Amazfit T-Rex Pro Smart Watch for Men Rugged Outdoor GPS Watch, 18 Day Battery Life, 15 Military Standard Certified, 100+ Sports Modes, 10 ATM Water-Resistant, Black (Renewed) : 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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