Sennheiser RS175 TV/HiFi Digital Wireless Headphone System, Black Contents: Come with accessories in retail box. New Opened Box Condition. Product Information These wireless Sennheiser RS 175 headband headphones feature a frequency response of 22 Hz - 17 kHz and 114 dB sensitivity, delivering clear audio and a great listening experience. Offering a signature sculpted sound with crisp and bright audio, these phones are perfect for listening to music while you do chores or relaxing on the couch with your favorite movie. They come in