Acustica has been designed for limited eyesight and/or hearing. The dial is particularly large, highly contrasting, plainly designed and therefore easily read. Furthermore, the time can be given by vibration which is reliable in a noisy environment, at quiet moments, however, discreetly. At the press of a button the sound output can be changed. Good speech quality is thereby produced and there is the option of selecting German, French, Italian, British or US English.