AKG Wireless Head-worn Microphone System AKG-WMS-470 SPO SET PRODUCT HIGHLIGHTS PT420 Beltpack Wireless Transmitter SR420 Stationary Receiver Includes C555 L Headworn Microphone 8-Hour Battery Life on Single AA Battery Detachable Antennas for RF Accessories Balanced XLR and Unbalanced 1/4 Outputs Adjustable Squelch Control Audio Clip and RF Control LEDs 30 MHz Bandwidth 30-Meter Ra