Amazon.com: Sennheiser Consumer Audio RS 175 RF Wireless Headphone System for TV Listening with Bass Boost and Surround Sound Modes,Black : Electronics
Sennheiser RS 100 Circumaural Stereo-RF Headphone System - Newegg.com
Sennheiser RS 120-W On-Ear Wireless Headphones for Crystal-clear TV Listening with 3 Sound Modes, Lightweight Design, Easy Volume Control, 60 m Range and Convenient Transmitter/Charger Combo - Black - Walmart.com
Sennheiser Wireless Headphones HDR 100 With Base System And Wires TR100 | eBay
NEW Sennheiser RS 100 Headband Wireless RF Headphone System | eBay
Does anyone have any info on the HDR 100? : r/headphones
Sennheiser RS 100 - full specs, details and review
Sennheiser HDR 175 Extra headset for RS 175 wireless headphone system at Crutchfield