Characteristics Of A Mechanical Watch; Names Of The Parts - Seiko 8R28 Instructions Manual

CAL. 8R28
CHARACTERISTICS OF A MECHANICAL
WATCH
(self-winding type, automatic winding type)
● This mechanical watch operates using power obtained from a mainspring.
● If the watch is completely stopped, manually turn the crown approximately 20 times
to wind up the mainspring to start the watch.
● While loss/gain of a quartz watch is indicated by a monthly or annual rate, accuracy
of a mechanical watch is normally indicated by a daily rate (loss/gain per day).
● Normal usage accuracy of a mechanical watch varies according to conditions of use
(time period that the watch is worn on the wrist, temperature environment, hand
movement, and winding state of the mainspring).
● When the watch is affected by strong magnetism, it temporarily gains or loses
time. If the watch encounters a strong magnetic field, the parts of the watch may
be magnetized. In this case, repairs such as removal of magnetism are required.
Contact the retailer from whom the watch was purchased.


NAMES OF THE PARTS

Center stopwatch hand
Hour hand
Stopwatch minute hand
Stopwatch hour hand
CROWN
a) Normal position : winding up the mainspring (manual operation)
b) First click position : date setting
c) Second click position : time setting
Minute hand
A
To START/STOP the stop-
watch
a b c
CROWN
Small second hand
B
To RESET the stopwatch
Calendar