Sennheiser RS 165 vs Sennheiser RS 175: What is the difference?
SLLEA AC/DC Adapter for Sennheiser RS 165 RS165 TR 165 Digital Wireless Headphone System Power Supply Cord Cable PS Wall Home Charger : Amazon.ca: Electronics
MyVolts 9V Power Supply Adaptor Compatible with/Replacement for Sennheiser RS-165 Wireless Headphones - US Plug : Amazon.ca: Electronics
Sennheiser RS 165 Wireless headphones with transmitter at Crutchfield Canada