Wireless transmitters broadcast up to 100 feet unobstructed and are powered via AC electricity. Contains two inputs, one 1/4-inch audio input for broadcasting over the headphones and one 1/4-inch wired mic input for communicating to those listening to the headphones. This flexible setup allows for some creative uses, including translating religious services on the fly for non-native speakers. Transmitters and position packages includes six-foot long 1/4-inch input plug to 3.5mm mini-plug patch cord as well as charging lead for eight rechargeable wireless Califone headphones.