SGT - Société des Garde-Temps - LED

European Watch Clock and Jewellery Fair 1975 BF 315
Modern styling for an advanced timepiece : SGT’s solid-state LED (light-emitting diodes) watch. A push on the top button commands the hour and minute (with a dot to distinguish a.m from p.m. time). A push on the bottom button commands the seconds and date readout. When 95 % of the batteries’ power is spent, the display starts blinking to indicate that battery change is necessary. (SGT - Société des Garde-Temps - LED)