Li-Polymer-battery- 450mAh (3.7V) for mobile phone smartphone phone Sennheiser DW 30 HS - Electropapa
Charging the headset and storing the headset system. Sennheiser DW Office USB ML, DW Office, DW Pro 2, DW Pro 1 PHONE, DW Pro 1 USB ML, DW Pro 2 ML, DW