Enjoy crystal-clear audio, without missing a word! The Williams Sound DWS-PCS-2 Personal Communication System uses Digi-Wave digital technology to make hearing easier for a vast array of applications. This simultaneous, two-way system helps you hear in everyday situations and gives you can easy access to two-way communication with the simple push of a button. By reducing background noises, as well as compensating for distance from the sound source or poor room acoustics, this personal communication system gives you crisp, clean audio. Perfect for classrooms, Digi-Wave maximizes a student's ability to hear, ensures that the teacher's message is heard clearly and concisely, and the two-way communication feature provides the option for student Q & A. Also ideal for group settings by adding an optional DLT 100 transceiver to your DWS PCS 2 to enhance conference/meeting interaction. Place a DLT 100 on either end of a conference table. (The DLT 100 features a built-in microphone and speaker; so, additional headsets for other meeting attendees are unnecessary.) The listener (with a DLT 100) can hear other meeting attendees and has push-to-talk capability. 2-way, simultaneous communication; Both parties on constant talk; no need to keep pushing button; Multiple channels available; Patented, interference-reduction technology provides seamless, secure operation; 2.4 GHz operation works well in RF-saturated environments.