SHURE, QLXD24

Shure QLXD24/SM58 Digital Wireless Handheld Microphone System, QLXD4 Receiver & QLXD2/SM58 Handheld Transmitter QLX-D Digital Wireless Handheld System with QLXD2/SM58 Microphone with Transmitter, and QLXD4 Receiver
  Shure QLXD24/SM58 Digital Wireless Handheld Microphone System, QLXD4 Receiver & QLXD2/SM58 Handheld Transmitter 

Thanks to its

Shure QLXD24/KSM9 Handheld Wireless Microphone System, QLXD4 Receiver & QLXD2 Handheld Transmitter with KSM9 Microphone Head This system is available as QLXD24/KSM9. It contains a QLXD2 handheld transmitter with KSM9 microphone head and a QLXD4 receiver.

Shure QLXD24/BETA58 Handheld Wireless Microphone System, QLXD4 Receiver & QLXD2/BETA58A Handheld Transmitter BETA 58A, QLXD4, microphone clip, power supply, 2 AA batteries, battery contact cover, two 1/2 wave antennas, 2 BNC cables, zipper bag, 2 BNC bulkhead adapters, rackmount kit, and user guide
  SPECIFICATIONS Simultaneous

Shure QLXD24/KSM9HS Handheld Wireless Microphone System, QLXD4 Receiver, QLXD2 Transmitter with KSM9 capsule QLX-D Digital Wireless Handheld System with QLXD2/KSM9HS Vocal Microphone with Transmitter, and QLXD4 Receiver
  Shure QLXD24/KSM9HS Handheld Wireless Microphone System, QLXD4 Receiver, QLXD2 Transmitter with KSM9 capsule 

With an interchangeable

Shure QLXD24/BETA87C Handheld Wireless Microphone System, QLXD4 Wireless Receiver & QLXD2/BETA87C Handheld Transmitter QLX-D Digital Wireless Handheld System with QLXD2/BETA87C Condenser Microphone with Transmitter, and QLXD4 Receiver
  Shure QLXD24/BETA87C Handheld Wireless Microphone System, QLXD4 Wireless Receiver & QLXD2/BETA87C Handheld