Battery type: Li-polymer Capacity: 650 mAh Voltage: 3.7 V Energy: 2.41 Wh Dimensions (L x W x H): 4.5 x 3.4 x 0.5 cm Number of cells: 1 Weight: 14 g Compatible with the following device models: Sennheiser PXC 550 Sennheiser PXC 550-II Sennheiser MB 660 To ensure compatibility, please check to see whether the battery you are currently using is listed below. Replacement for: Sennheiser 507271-88 Sennheiser AHB413645PCT .
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