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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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Amazon.com: Apple Watch Ultra 2 [GPS + Cellular 49mm] Smartwatch with Rugged Titanium Case & Orange/Beige Trail Loop S/M. Fitness Tracker, Precision GPS, Action Button, Extra-Long Battery Life, Carbon Neutral : Cell
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Apple Watch Series 2 post-review tidbits: watchOS 3.1 battery life, GPS navigation, water resistance & more - 9to5Mac
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