The mechanism of quartz clock, based on the phenomenon of piezoelectricity, is one of the most energy-efficient, for a reliability of a 1 second discrepancy over 6 years running period. With its 30.5cm diameter, ARIA is an ideal clock for individual offices or collective offices of small size. Its double large number display allows an easy reading from a distance up to 25 meters. Sober look, with its large Arabic numbers and its red second hand. No glass on the screen : no risk of breakage or damage in case of fall-down. Easy to fix on the wall.