Seiko 7R68 manual Specifications, Power reserve indicator above 1/4

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SPECIFICATIONS

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)

Less than 15 seconds at normal temperature range (5° C ~

 

 

35° C) (41° F ~ 95° F) (Corresponding to a daily rate of less

 

 

than 1 second)

4

Operational temperature range

–10°C ~ +60° C (14° F ~ 140° F)

 

 

* When using the watch in low temperatures, keep the

 

 

power reserve indicator above “1/4”.

5

Driving system

Manual winding mechanism

6

Hand movement system

Sweep-movement second hand

7

Duration of operation

Approx. 48 hours. (If the watch is fully wound with the

 

 

power reserve indicator pointing to “1”)

8

IC (Integrated Circuit)

Oscillator, frequency divider and spring drive control circuit

 

 

(C-MOS-IC), 1 piece

9

Jewels

30 jewels

* The specifications are subject to change without prior notice for product improvement.

English

11

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Contents Cal R68 Page Contents UP to 48 Hours of Continuous Operation Power Reserve IndicatorSpring Drive Mechanism SWEEP-MOVEMENT Second HandEnglish Crown Display and Crown OperationCrown HOW to Wind the WatchTurn counterclockwise to advance TIME/DATE SettingDate adjustment at the beginning of the month TIME/DATE Setting HOW to Wind the WatchPower reserve indicator above 1/4 Specifications