Wireless beltpack system UHF, with built-in antenna on the receiver. Includes PT 40 transmitter, the smallest and lightest in its category, and SR 40 receiver. Battery life reaches up to 30 hours with one 1.5V AA battery. The PT 40 can accept all microphones in the MicroMics series. The receiver features indicators for ON/OFF, link, RF OK, and AF clip. The SR40 has controlled output adjustment with 1/4 jack. The power supply included in the package operates from 110-240V. Suitable for singing and speeches.