Description Neckband Microphone with Beltpack Transmitter as alternative or replacement for QTX Portable PA units For use with QRPA and QXPA Compatible with Chord neckband and lavalier microphones Carrier frequency : 174.1MHz Batteries : 2 x AA (alkaline) Connection : Threaded 3.5mm mono jack Phantom power : 3V Dimensions : 150 x 120 x 40mm Weight : 97g (no battery)