· feedback risk management for reduction of acoustic feedback · variable crossover frequency · special digital fitting philosophy based on keyed in audiometric values · digital volume control ± 6 db range with beep-tone adjustment indicator · m mt and t settings available with beep-tone indicator the telecoil frequency response is equalized to that of the microphone · long battery life of approximately 375 hours · low battery beep-tone indicator · minimal audible internal noise due to special processing · direct audio input including the microlink by widex · tamper resistant battery drawer wide ...