The new GLX-D+ Dual Band Wireless Rack System features the versatile SM31 Headset Microphone for spoken word applications and the GLXD4R+ half-rack receiver. 

GLXD14R+/SM31

Digital Wireless Rack System with SM31 Headset Microphone
Mic Capsule:

The new GLX-D+ Dual Band Wireless Rack System features the versatile SM31 Headset Microphone for spoken word applications and the GLXD4R+ half-rack receiver.