Amazon.com: Shure GLXD4+ Pro Digital Wireless Single Channel Receiver, Dual Band (operates in 2.4GHz and 5.8Hz), 100 ft Range - for use with GLX-D+ Dual Band Wireless Systems (Transmitter Sold Separately) :
Shure GLX-D24+ GLXD24+ Digital Wireless System with GLXD2+ Handheld Transmitter SM58 Microphone Capsule GLXD4+ Tabletop Receiver 2.4GHz and 5.8 GHz Dual Bands Z3 SB904 lithium-ion rechargeable battery | Reverb Canada
SHURE GLXD14R/BETA98 WIRELESS DIG INSTRUMENT SYSTEM AUTO SETUP: 2.4GHZ