View Cart “Shure BLX Lavalier Wireless System: BLX4 wireless receiver; BLX1 bodypack transmitter; PG185 cardioid condenser lavalier microphone with windscreen and tie clip Power and battery status LED, Adjustable gain control, Quick & easy frequency matching, 2 AA batteries (included) provide up to 14 hours of continuous use, 300 ft operating range SH-BLX14PG85-1” has been added to your cart.