The Azden 1201 BT Beltpack Transmitter is designed for use with the 1201 Series receivers. The 1201-series also offers 188 user selectable, DTV compliant frequencies. A Hirose connection accommodates compatible lavalier microphones. There is a multi-function digital display, and rugged construction ensures reliable use outdoors, on the road, etc. The transmitter is powered via 2-AA alkaline batteries for up to 8-hours.