Ni-Mh 60 mAh. Passar till bla: Sennheiser SET- 20, Sennheiser SET- 820S, Sennheiser SET- 810, Sennheiser SET- 810S, Sennheiser SET- 250, Sennheiser SET- 250J, Sennheiser A200, Sennheiser RI250, Sennheiser RI250-J, Sennheiser RI250S, Sennheiser HDI302, Sennheiser A200, Sennheiser RS-30, Sennheiser RS-40,