A high-tensile disc protects the 5” HD touchscreen of the EP821, which can also be operated safely with gloves or wet hands. A repertory key activates the video upload function, whereby the process can be followed also by a third party in real time. A large button and a push-to-talk function assure user-friendliness. High performance speakers facilitate conversation in a noisy environment. The housing is injection-moulded using hard and soft materials, it lies comfortably in the hand and is protected from impact by protection class IP68.