Genuine Replacement battery for Sennheiser Wireless Headsets. OfficeRunner, DW Office, DW Pro1, DW Pro2, DW Pro2 ML, DW Office ML, SD Office, SD Office ML, SD Pro1, SD Pro1 ML, SD Pro2, SD Pro2 ML, MB Pro series. Li-Polymer, 180mAh mAh .Cameron Sino offers premium quality batteries and chargers at an affordable price. Our products are CE and RoHS certified .We offer a wide range of products