UpBright AV Audio Cable Cord For Sennheiser RS 170 RS 180 Digital Wireless Headphones RS170 RS180 Sennheiser RS 160 Over the Head Wireless Headphones RS160 Tested Units. In Great Working Condition.UpBright 30 days money back guarantee. 1 full year service warranty. UpBright AV Audio Cable Cord For Sennheiser RS 170 RS 180 Digital Wireless Headphones RS170 RS180 Sennheiser RS 160 Over the Head Wireless Headphones RS160