Before purchasing, please ensure that the wireless frequency band you select works in your area. Includes BLX88 dual-channel receiver, BLX1 bodypack transmitter, BLX2/PG58 handheld transmitter, CVL lavalier microphone, power supply, microphone clip, lavalier clip, lavalier windscreens, and user guide BLX1 wireless bodypack transmitter works for up to 14 hours on two AA batteries (included) 300 feet (91 m) operating range (line of sight) Quick & easy frequency matching Adjustable gain control Power and battery status LED When performance is set free from wires, it can go to exciting places. But noise and dropouts can stop it cold. BLX Wireless makes it simple to get great sound out of a dependable wireless system. And when you can go wireless without worry, you can perform without limits.