Sennheiser RS185 Wireless Headphone

About This ItemDescriptionAbout this item Audiophile style open back, circumaural headphone system with excellent digital wireless audio transmission delivering range up to 328feet/100meter (line of sight) .Connectivity Technology: Wireless High performance Sennheiser transducers deliver precise, detailed and dynamic sound Multipurpose transmitter supports both Digital and Analog Inputs in addition Automatic and Manual Level Control - also functions as 'easy charge' cradle and docking station for the headphones Multi receiver transmission transmitter supports up to two pairs of headphones simultaneously (optional HDR 185, sold separately) 2 year warranty when purchased from an authorized Sennheiser dealer. Signal to noise ratio: [Analog input] ALC typ. 85 dBA at 1 Vrms, MLC ≥ 90 dBA, [Digital input] > 90 dBA Frequency response is 17 - 22,000 Hertz. Carrier frequencies: 2.4 – 2.48 GigaHertz