About the Sennheiser HDR 165

This extra headset for the Sennheiser RS 165 wireless headphone system allows two people to enjoy the same show or movie. It pairs up easily to the transmitter so that both headsets can be used at once — each with a listening range of 98 feet. Buttons on the right earcup give you personal control over your own volume. There's even a bass boost button for action scenes that need more "oomph."

Product highlights:

• add-on headset for use only with Sennheiser's RS 165 wireless headphone system (sold separately)

• over-the-ear, closed-back design helps keep out external noise

• two headsets can be used with a single transmitter

• wireless range: up to 98 feet (line of sight)

  • 2.4 GHz wireless frequency band

• volume controls and bass boost button on headphones

• automatic pairing to transmitter for hassle-free operation

• includes 2 "AAA" NiMH rechargeable batteries for the headphones (standard "AAA" may also be used)

  • battery life: up to 18 hours with a full charge using the included batteries

• frequency response: 18-21,000 Hz

• requires transmitter/base-station from RS 165 system for use