Adastra: 952.353UK, Conference Microphone with Base, XLR Connection, Condenser, 2 AAA BatteriesA flexible stem microphone with base for conferences or meetings. Connection to the base is via XLR and provides power to the condenser microphone capsule either from 2 x AAA batteries in the base or from external phantom power. High quality back electret condenser microphone Flexible stem for convenient positioning Electronic latching paging switch on base unit Battery or phantom power Supplied with 5m XLR lead