UHF wireless handheld system, with integrated antenna in the receiver. Includes HT 40 handheld transmitter and microphone and SR 40 receiver. Battery life up to & 30 hours with a 1.5V AA battery. The receiver indicators include indications for ON / FFF, link, RF OK and AF clip. The SR40 has a controlled output output with 1/4 jack. The power supply included in the package works from 110-240V. Suitable for song & speeches.