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Amazon.com: Apple Watch Series 4 (GPS + Cellular, 44MM) - Space Black Stainless Steel Case with Black Sport Band (Renewed) : Electronics
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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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Apple Watch Series 4 Models Have Nearly 20% Less Battery Capacity Despite Same 'Up to 18 Hours' Battery Life - MacRumors
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Amazon.com: Apple Watch Series 4 (GPS, 44MM) - Space Gray Aluminum Case with Black Sport Band (Renewed) : Cell Phones & Accessories
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Amazon.com: Apple Watch Series 4 (GPS + Cellular, 44mm) - Stainless Steel Case with White Sport Band : Electronics
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