Sennheiser RS 110 Over-Ear Headphones, Open Cup, Volume Control with 6.3 mm (1/4") Stereo Adapter, AC Power Adapter, Transmitter Unit, 2 AAA batteries, Black, Silver, 009917 - Walmart.com
Sennheiser Wireless Headphones RS 110 TU110 & HDR110 for sale on eBay - YouTube
Sennheiser Wireless Headphones RS 110 TU110 & HDR110 for sale on eBay - YouTube