The Sennheiser ew 122 G3 Wireless Contractor Combo Kit (A 516-558MHz Frequency Range) provides dependable performance for both speech and performance applications and includes a UHF diversity receiver, bodypack transmitter, ME 4 lavalier microphone and SKM 100-835 handheld transmitter. The combination of both handheld and bodypack transmitters provide the user a wide variety of options. Both transmitters and receiver synchronize channel and frequency at the touch of a button. The bodypack and handheld transmitters allow you to charge the (optional) rechargeable pack while installed. 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 122 G3 is at home in theaters, clubs, town halls, houses of worship, DJ applications and more.