Sennheiser RS160 Digital Wireless 3.5mm Headphones System with Hi Fi Sound RS160 - Walmart.com
Amazon.com: Sennheiser SC 160 USB (508315) - Double-Sided (Binaural) Headset for Business Professionals | with HD Stereo Sound, Noise Canceling Microphone, & USB Connector (Black), Black : Electronics
Sennheiser HDR 160 Headband Wireless Headphones w/transmitter and Power Cord | eBay
Open box - Open Box: Sennheiser HDR 160 Over-Ear RS 160 Wireless Headphones (HDR160)