Featuring the industry standard SM58® microphone handheld, the premium WL185 lavalier microphone, and the half-rack GLXD4R+, the new GLX-D+ Dual Band Wireless Combo System is tailored to deliver maximum flexibility for installed applications. 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.