Battery type: Li-polymer Capacity: 200 mAh Voltage: 3.7 V Energy: 0.74 Wh Dimensions (L x W x H): 3 x 1.7 x 0.4 cm Number of cells: 1 Weight: 4 g Compatible with the following device models: Sennheiser DW Pro 2 Sennheiser DW Pro2 ML Sennheiser DW Pro2 Sennheiser DW Pro 30 To ensure compatibility, please check to see whether the battery you are currently using is listed below. Replacement for: Sennheiser 504374 Sennheiser BATT-03 .
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