A comprehensive first step into professional wireless, Performance Gear Wireless is engineered to the same uncompromising quality standards as PGX, SLX, and UHF-R. Combining superior Shure sound quality and stage-proven endurance with advanced features like Internal Antenna Diversity, Performance Gear Wireless offers professional tools created for confident performance. With hassle-free setup, stage-worthy construction, and superior sound quality, Performance Gear Wireless does what great gear is supposed to do — get the job done and never get in the way. The first professional choice for freedom from the wire. A maximum of 2 units can be used at one time.