The ADN-W D1 wireless delegate unit offers excellent speech intelligibility and ease of use. Powered by the exchangeable ADN-W BA battery pack, the unit offers more than 20 hours operating time. The delegate unit features a microphone key that functions either as an on/off switch or as a request-to-speak button. The unit is equipped with a high-performance broadband twin loudspeaker system for decentralized sound reinforcement. A screw-on microphone socket is provided to connect a super-cardioid ADN-W MIC gooseneck microphone (available in different lengths and frequency responses). The wireless delegate unit with its battery pack can be charged in the ADN-W CASE UNITS or using the NT 12-50C DC power supply.