These headphones feature built-in wireless technology which allows you to listen to your Hi-Fi or TV without the inconvenience and restrictions of a cable connection. They\'re perfect for late nights watching TV or movies, or for listening to music without disturbing those around you. The 30mm drivers provide superior sound quality with excellent bass response, smooth mids and superb clarity. The headphones are very lightweight and feature fully cushioned earpads for maximum comfort over extended listening. An on-ear volume control allows for convenient control of audio levels.The compact Transmitter unit connects to your TV or audio device via a 3.5mm stereo jack or a stereo phono connection. It also features a built-in USB DAC (Digital to Analogue Audio Converter) for connecting to your PC. Package Contents WHF-45 Wireless TV Headphones Transmitter unit with built-in USB DAC Transmitter multi country power supply 1.5m USB A to Mini-B cable 2m stereo audio cable with 3.5mm jacks 3.5mm jack to stereo phono adapter cable User manual Note: The headphones require 2 x AAA batteries (sold separately)