Seiko 7K52 manual Specifications

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SPECIFICATIONS

1 Frequency of crystal oscillator

32,768 Hz (Hz = Hertz ...

Cycles per second)

2

Loss/gain (monthly rate)

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

 

 

~ 35° C) (41° F ~ 95° F)

 

3

Operational temperature range

–10°C ~ +60° C (14° F ~ 140° F)

 

 

0° C ~ +40° C (32° F ~ 104° F) for water depth

 

 

measurement function

 

4

Driving system

Step motor, 4 pieces

 

5

Display system

 

 

 

TIME/CALENDAR display

Hour, minute and small second hands and date

 

DEPTH MEASUREMENT display

Current depth by DEPTH hand and 1/10 m hand

 

 

Maximum depth by MAX. DEPTH hand (in 0.5 m

 

 

increments)

 

 

 

Diving time by DIVING TIME hand (in 1/5 minute

 

 

increments)

 

 

 

Time submerged by the small hour and minute hands at

 

 

the 6 o’clock position

 

 

LOG DATA display

Stores details of two dives.

 

 

Maximum depth by MAX. DEPTH hand (in 0.5 m

 

 

increments)

 

 

 

Average depth by DEPTH hand and 1/10 m hand

 

 

Diving time by DIVING TIME hand (in 1/5 minute

 

 

increments)

 

 

 

Time submerged by the small hour and minute hands at

 

 

the 6 o’clock position

 

 

ALARM display

Small hour and minute hands at the 6 o’clock position

 

 

• While disengaged

: Current time

 

 

• While engaged

: Designated alarm time

English

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Image 31
Contents Cal K52 English English English Contents Diving Measurement SINGLE-TIME AlarmTIME/CALENDAR Screw lock type Small second hand CrownTo unscrew the crown To screw in the crown HOW to USE the Screw Lock Type CrownTIME/CALENDAR Setting Press repeatedly until you hear a long beep Adjusting the Hand Position Before DivingDiving Measurement HOW to Read the MeasurementsPress button B repeatedly HOW to USE the Diving FunctionRapid ascent warning CaseBeep Beep Rapid Ascent WarningAbnormal Measurement / Measurement Halt Warning Extra Measurement Range Warning LimitEnglish Diving hands at Position Recall of LOG DataLog data of the last dive Log data of the dive before lastRotating Bezel Alarm Time Setting SINGLE-TIME AlarmBefore Diving Precautions for DivingWhile Diving After Diving Adjusting the Hand Position Before Diving TIME/CALENDAR SettingHow to use the diving function How to read the measurementsExtra measurement range warning Abnormal measurement / measurement halt warning Recall of LOG DataRemarks on the indication of MAX.DEPTH and Depth hands SINGLE-TIME Alarm Battery Change Battery Life IndicatorEnglish Necessary procedure after battery change To extend the band length HOW to USE the Diver ExtenderSpecifications Accuracy of the alarm ± 1 minute