The Shure GLX-D+ dual-band wireless rack system features the precision-crafted BETA 98H/C flexible gooseneck microphone for brass, woodwind and percussion applications, plus the GLXD4R+ half-rack receiver. GLX-D+ wireless systems combine Automatic Frequency Management technology and dual-band (2.4GHz and 5.8GHz) wireless operation with a rackmountable metal receiver, rechargeable lithium-ion batteries and unparalleled design. This system includes a GLXD1+ bodypack transmitter, a GLXD4R+ rackmountable wireless receiver, an SB904 lithium-ion rechargeable battery, a BETA 98 clip-on mic and all the accessories you'll need.