User manual SEIKO 7D48

[. . . ] When the watch is in power save mode, the hands stop moving but the built-in IC continues to calculate the time and calendar. 6 Page 6 05. 5. 6, 4:15 PM When the watch is in power save mode, swinging the watch several times will activate the "time relay function, " which automatically resets the watch hands to the correct time that has been retained inside the watch. English Do not pull the crown out to the second click position while the watch is in power save mode. This will cancel the power save function causing the time data retained in the watch to be erased. Do not leave the watch with its crown being at the second click position, as the watch consumes greater energy than it uses while it is in power save mode. <Remarks on Power Save Function> When the watch is left untouched for approximately 24 hours (approximately one day), the power save function is automatically activated. While the second hand is moving at two-second intervals, the power save function cannot be activated. When the power save function is activated, the hour, minute, second and 24hour hands will stop moving. While the watch is in power save mode, the calendar continues to function normally. [. . . ] As it rotates, it gives out a sound, which is not a malfunction. 1. Only the hour, minute and 24hour hands move quickly to indicate the current time which has been internally retained in the built-in IC. 2. Then the second hand will follow quickly to resume the normal movement. The second hand remains still. 10 Page 10 05. 5. 6, 4:15 PM Notes English If there is any time difference between the factory default time settings and the local time in your area, reset the time and calendar before initially using the watch after purchase. While the watch is in power save mode, the built-in IC computes the time internally at an accuracy of 15 seconds per month which is equivalent to the accuracy of conventional quartz watches. Therefore, the time relayed from the built-in IC to the hands by the automatic time relay function may include a certain amount of time loss or gain within the range of the accuracy of the watch ( 15 seconds per month. ) In such a case, reset the time as needed before starting to wear the watch. When the watch wakes up from power save mode while it is running on extremely low electrical power, the second hand starts moving at two-second intervals. (Refer to " IF THE SECOND HAND STARTS MOVING AT TWO-SECOND INTERVALS" on page 17. ) 11 Page 11 05. 5. 6, 4:15 PM HOW TO SET THE TIME AND CALENDAR English If there is any time difference between the factory default time settings and the local time in your area, reset the time and calendar before initially using the watch after purchase. In a case that the watch is completely stopped due to a shortage of stored electrical energy, recharge the watch until the second hand resumes the normal one-second interval movement, and then reset the time and calendar. (Refer to "IF THE SECOND HAND STARTS MOVING AT TWO-SECOND INTERVALS" on page 17. ) HOW TO SET THE TIME 1. The second hand will be stopping on the spot. If your watch has a screw lock type crown, unscrew the crown first, and then pull it out to the second click. To set the second hand exactly, pull out the crown to the second click at a moment the second hand is pointing to the 12 o'clock (" 0 " second) position. Second click position Original position 12 Page 12 05. 5. 6, 4:15 PM 2. Turn the crown to set the time. English Remember to check the 24-hour indicator to correctly set AM/PM. To set the time accurately, advance the minute hand 4 to 5 minutes ahead of the correct time, and then turn it back to the exact time. 3. The watch immediately starts ticking. To set the second hand exactly, push the crown back into the original position in accordance with a time signal. CAUTION Avoid setting the time or calendar at a time between 23:00 and 1:00. If you adjust the time or calendar at a time between 23:00 and 1:00, and the date is incorrectly advanced or delayed one day, readjust the watch avoiding the above period of time. While the watch runs in normal operation, the date changes during the time between 23:30 and 0:30. 13 Page 13 05. 5. 6, 4:15 PM HOW TO SET THE PERPETUAL CALENDAR English Date, month and year are interlocked on the perpetual calendar. To set the month or year, advance the date by turning the crown until the month or year becomes adjustable. The calendar can be adjusted by turning the crown in either direction upward or downward at the first click position. <Remarks on month, year settings> When the date advances to change to " 1 , " the month indicator rotates for one month to indicate the following month. When the date advances further until the month indicator moves forward from December (DEC) to January (JAN), the year display dial rotates to show the following year. CAUTION When setting the calendar in the direction backward, put the date back for one or two days behind the date you wish to set, and then advance it to the desired date. Follow the above procedure for setting the calendar in the direction backward, otherwise the date numeral may not appear in the center of the calendar frame. Even though this happens, the date display will be aligned correctly the following day. 14 Page 14 05. 5. 6, 4:15 PM 1. Each calendar item should be adjusted in sequence of year, month and then date. Pull out the crown to the first click. English If your watch has a screw lock type crown, unscrew the crown first, and then pull it out to the first click. Crown at the first clock position 2. [. . . ] Cycles per second) Loss/gain (monthly rate) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Less than 15 seconds (worn on the wrist at normal temperature range 5 C ~ 35 C) Operational temperature range . . . . . . . . . . . . . . . . . . . . . . . . . ­10 C ~ +60 C Driving system ·Step motor: 2 pieces One for the hour and minute hands moving at five-second intervals The other for the second hand moving at one-second intervals ·Piezoelectric motor (For perpetual calendar): 1 piece KINETIC electricity storage unit . . . . . . . . . . . . . . . . . . . . . . . . Button type, 1 piece Continuous operating time ·Time relay function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ]