Battery type: Li-polymer Capacity: 240 mAh Voltage: 3.85 V Energy: 0.92 Wh Number of cells: 1 Weight: 101 g Compatible with the following device models: Apple Watch A1554 42mm 1st generation Apple Watch MJ3N2LL/A To ensure compatibility, please check to see whether the battery you are currently using is listed below. Replacement for: Apple A1579 .
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