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Amazon.com: Replacement Battery for Apple Watch 2 42mm Part NO Apple A1761 : Cell Phones & Accessories
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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: for Apple Watch Series 2 2st 42mm A1758 Gen Replacement Battery A1761 334mAh 3.8V + Adhesive&Tools : Cell Phones & Accessories
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Kanex Portable Battery for Apple Watch,For Smartwatch, USB Device, Mobile Device, iPhone, Smartphone - Lithium Ion (Li-Ion) - 4000 mAh - 1 A - 5 V DC Output - 2 x - Space Gray - kite+key, Rutgers Tech Store
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