Kastar Battery Replacement for Sennheiser Headphone Battery Battery Type: Ni-MH; Battery Voltage: 1.2V Battery Capacity: 1000mAh Package Includes: 2Pcs Batteries Compatible with: Sennheiser RS110 RS-110, Sennheiser RS120 RS-120, Sennheiser RS130 RS-130, Sennheiser RS160 RS-160, Sennheiser RS170 RS-170, Sennheiser RS180 RS-180, Sennheiser RS195 RS-195, Sennheiser PXC 250-II, Sennheiser PXC 350, Sennheiser PXC 450, Sennheiser HDR 170 Headphone Compatible with the following headphones:

Sennheiser RS110 RS-110
Sennheiser RS120 RS-120
Sennheiser RS130 RS-130
Sennheiser RS160 RS-160
Sennheiser RS170 RS-170
Sennheiser RS180 RS-180
Sennheiser RS195 RS-195
Sennheiser PXC 250-II
Sennheiser PXC 350
Sennheiser PXC 450
Sennheiser HDR 170