Seiko 7R68 Instructions Manual

4, 4 English CAL. 7R68 “SPRING DRIVE” SPRING DRIVE MECHANISM ● Like a traditional mechanical watch, the mainspring drives the watch. What is new is that it also runs a generator which in turn oscillates a quartz crystal. This regulates the movement of the hands as accurately as a traditional qu…

11, 11 English 1 Main functions ........................................ 3 hands (hour, minute and second hands), calendar, and power reserve indicator 2 Frequency of crystal oscillator ................ 32,768 Hz (Hz = Hertz … Cycles per second) 3 Loss/gain (monthly rate) .......................... Le…

5, Seiko 7R68 5 English CAUTION ● This watch is driven by a mainspring. To ensure constant operation of the watch, be sure to wind it completely before the power reserve indicator points to “0”. ● If the watch is used in temperatures below 0° C with the power reserve indicator pointing t…

6, 6 English DISPLAY AND CROWN OPERATION 6 Minute hand a b c CROWN DateSecond hand Power reserve indicator Hour hand a: Normal position ...... Winding the watch by turning clockwise b: First click ................. Date setting c: Second click .......... Time setting …

9, 9 English ● Date adjustment at the beginning of the month The watch indicates dates from “1” to “31”. In March and months following 30-day months, you will need to make the following adjustment: CROWN Pull out to the first click . ▼ Turn counterclockwise until “1” a…

10, 10 English NOTES ON USING THE WATCH HOW TO WIND THE WATCH ● Wind clockwise. The watch is so designed that the mainspring will not be wound by turning the crown counterclockwise. TIME/DATE SETTING ● Date setting (also for “● Date adjustment at the beginning of the month”) Do not set th…