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Apple Watch Ultra [GPS + Cellular 49mm] Smart watch w/Rugged Titanium Case & yellow/Beige Trail Loop S/M Fitness Tracker, Precision GPS, Action Button, Extra-Long Battery Life, Brighter Retina Display
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Testing Apple Watch Series 4 half marathon battery life with cellular off: over 50% after 2 hours - 9to5Mac
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Upgraded STOON Compatible with Apple Watch Charger, Compatible with iWatch Charger, Portable Magnetic Wireless Charger, 1000mAh Power Bank for Watch Series 8/7/6/5/4/3/2/1/Nike+
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Apple Watch Series 4 Models Have Nearly 20% Less Battery Capacity Despite Same 'Up to 18 Hours' Battery Life - MacRumors
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