Battery type: Li-polymer Capacity: 45 mAh Voltage: 3.7 V Energy: 0.17 Wh Number of cells: 1 Dimensions (L x W x H): 15 x 8.7 x 1.5 cm Weight: 97 g Compatible with the following device models: Fitbit Alta Activity Fitbit Alta HR To ensure compatibility, please check to see whether the battery you are currently using is listed below. Replacement for: Fitbit FB407 .
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