The Sennheiser ew 135 G3 Wireless Handheld Microphone System with GA 3 Rack Kit (A 516-558MHz Frequency Range) provides dependable performance for both speech and performance applications and includes a UHF diversity receiver and handheld transmitter. The transmitter and receiver synchronize channel and frequency at the touch of a button. The handheld microphone allows you to charge the (optional) rechargeable pack while it remains in the transmitter. The receiver's back-lit display allows for easy operation under dimly-lit conditions and its user friendly menu makes operation quick and easy. The ew 135 G3 is at home in theaters, clubs, town halls, houses of worship, DJ applications and more.