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1. SPECIFICATIONS: MODULE QW-2609/2637/2638/2639
Battery
CTL1616 (Storage battery)
Note: Use CTL1616 only. Other storage battery or CR1616 can cause
damage to the watch.
Battery life
Approx. 6 month (from full charged condition)
Current consumption
1.135
µ
A maximum
Alarm system
Piezo plate on Cover/Back
Accuracy
±
15 sec./month
Accuracy setting system
Trimmer capacitor
Accuracy checking
See page 26
Item
Detail
Functions
Accuracy at normal
temperature:
±
15 seconds a month (with no signal calibration)
Timekeeping:
Hour, minutes, seconds, a.m. (A)/p.m. (P), month, day,
day of the week Time system: Switchable between 12-
hour and 24-hour format
Calendar system:
Full Auto-calendar pre-programmed from the year 2000
to 2099
Other:
Home city cord (can be assigned one of 34 city cords);
Daylight Saving Time/Standard time
Time Calibration
Signal Receotion:
Auto Receive (four times per day, at 2:00 AM, 3:00 AM, 4:00
AM, and 5:00 AM); Manual Receive; Last Signal screen
Receivable Time
QW-2609/2639:
Receivable Time Calibration Signals Fort Collins,
Colorado (Call Sign: WWVB, Frequency: 60kHz)
Fukushima, Japan (Call Sign: JJY, Frequency: 40kHz)
Fukuoka/Saga, Japan(Call Sign: JJY, Frequency: 60kHz)
QW-2637:
Receivable Time Calibration Signals
Mainflingen, Germany (Call Sign: DCF77, Frequency: 77.5kHz)
QW-2638:
Receivable Time Calibration Signals
Fort Collins, Colorado (Call Sign: WWVB, Frequency: 60kHz)
World Time:
30 cities (29 time zones)
Other:
Standard time/Daylight Saving Time, Home time (hour,
minutes, a.m. (A)/p.m. (P), and Standard time/Daylight
Saving Time)
Time Recorder:
Memory for 30 records, each containing hour, minutes,
seconds, a.m. (A)/p.m. (P), and Standard time/Daylight
Saving Time
Alarms:
Four one-time alarms; one snooze alarm; Hourly Time Signal
Stopwatch
Measuring unit: 1/100 second
Measuring capacity: 23:59' 59.99"
Measuring modes: Elapsed time, split time, two finishes
Other:
Backlight (electro-luminescent panel); Auto Light Switch
(Full Auto EL light operates only in the dark);
Battery power indicator; Power Saving function
Battery:
One rechargeable battery (type: CTL1616)
Use only the type of battery specified by CASIO. Never
use a different battery type. The wrong type of battery
can damage the watch.
Approximate Battery life:
6 months (from full charge to Level 3 when the watch is
not exposed to light) under the following conditions:
• Display on 18 hours per day, sleep state 6 hours per day
• 1 backlight operation (1.5 seconds) per day
• 10 seconds of alarm operation per day
• 4 times calibration reception per day