Electronic Latching Paging Switch On Base Unit. Battery or Phantom Power. High Quality Back-Electret Condenser Microphone. Gooseneck Assembly For Convenient Positioning. Collar Illuminates To Indicate “On Air”. XLR – XLR Lead SuppliedCapsule:Back-electret condensernPolar pattern:Cardioid (unidirectional)nPower supply:2 x AAA batteries or external phantom 9-52VdcnBase : dimensions:115 x 139 x 50mmnMicrophone : dimensions:435 x 21mmnWeight:560g. A gooseneck microphone with base for conference or paging applications. 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.. microphone-conference microphone