Battery type: NiMH Capacity: 1000 mAh Voltage: 1.2 V Nominal energy: 1.2 Wh Type designation: AAA Weight per cell: 26 g Colour: black Number of cells: 1 Rechargeable Compatible with the following device models: Sennheiser HDR 180 (RS 180) Sennheiser HDR 220 (RS 220) .
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