REVUE “MSR Quartz 1,5 MHz”

European Watch Clock and Jewellery Fair 1974 DF 314
This electronic ’wristwatch boasts a quartz that vibrates 1 ,548,288 times every second Such a performance could only be achieved by cutting the quartz in the form of a wafer and developing a single integrated circuit capable of dividing such a frequency. It is of the C-MOS, single-division, high-ratio type and comprises 342 transistors. This all-steel, water-resistant watch with integrated bracelet has a precision of the order of 1 to 2 seconds per month only. (REVUE “MSR Quartz 1 ,5 MHz”)