Included: BLX88 dual wireless receiver; 2 BLX2/PG58 handheld transmitters with integrated PG58 cardioid dynamic microphone capsules; 2 microphone clip * Power and battery status LED * Adjustable gain control * Quick & easy frequency matching * 2 AA batteries (included) provide up to 14 hours of continuous use * 300 feet (91 m) operating range (line of sight)