AKG WMS420 instrumental set professional wireless microphone system. Includes PT420 transmitter, instrument cable and SR420 receiver.
Modulation: FM
Frequency bands: 748,1MHz - 751,9MHz
RF output: 10mW / 20mW / 50mW (depending on frequency band)
Radio range: 30m (line of sight)
Battery / Operating time: 1 x AA / 8h