Swiss Watch Fair 1964
Total diameter of this woman’s watch is less than 18 mm. None the less, it is powered by a fully automatic movement. In addition despite its extremely low height, it is waterproof (with a tension ring). This type of specification has been obtained by use of a new automatic caliber 650 with annular balance (199800 vibrations per hour). The movement can also be fitted with a centre second hand and later, with a date calendar. (UNIVERSAL)