Shure SM58 User Manual page 33

BLX Wireless Systems
WIRELESS FREEDOM,
MADE SIMPLE.
BLX4, BLX4R and BLX88 Diversity Receivers Wireless Transmitters
BLX4 Wireless Receiver
Additional BLX4R features:
BLX4R Rack Mount Wireless Receiver
BLX2 Handheld BLX1 Bodypack
BLX88 Dual Wireless Receiver
Transmitter Transmitter