The new GLX-D+ Dual Band Wireless Rack System features the precision-crafted BETA®98H/C flexible gooseneck microphone for brass, woodwind and percussion applications and the GLXD4R+ half-rack receiver. The perfect combination of the automatic frequency management with the new Dual Band Technology provides reliable and consistent performance while Shure proprietary Lithium-Ion rechargeable batteries provide up to 12 hours of use. Go wireless without complication.