Operation Guide 3274
E-23
12 days (from full charge to stopping of watch operation) under the following
conditions:
100 seconds of alarm operation per day
x
E-22
Specifi cations
Accuracy at normal temperature:
±30 seconds a month
Timekeeping:
Hour, minutes, seconds, p.m. (PM), day, day of the week
Time system: Switchable between 12-hour and 24-hour formats
Calendar system: Auto-calendar set at 28 days for February
Alarm:
5 Daily Alarms; Hourly Time Signal
Stopwatch:
Measuring unit: 1/100 second
Measuring capacity: 59 minutes, 59.99 seconds
Measuring modes: Elapsed time, split time and two fi nishes
Countdown Timer
Measuring unit: 1 second
Input range: 1 minute to 24 hours (1-minute increments and 1-hour increments)
Power Supply:
Solar cell and a coin type capacitor
Approximate capacitor operating time: 14 days (from full charge to stopping of
watch operation) under the following conditions:
Watch not exposed to light
x
Internal timekeeping
x
20 seconds of alarm operation per day
x
E-21
Recovery Times
The table below shows the amount exposure that is required to take the charge from
one level to the next.
Exposure Level (Brightness)
Approximate Exposure Time
From function
stoppage until
“
” disappears
To full charge
Outdoor sunlight (50,000 lux)
1 hour and a half
1 hour
Window sunlight (10,000 lux)
7 hours
5 hours
Window sunlight on cloudy day
(5,000 lux)
14 hours
9 hours
Indoor fl uorescent lighting (500 lux)
140 hours
90 hours
The above exposure time values are all for reference only. Actual required exposure
x
times depend on lighting conditions.
E-20
Charging Guide
After a full charge, timekeeping remains enabled for up to about 14 days.
The following table shows the amount of time the watch needs to be exposed to light
x
each day in order to generate enough power for normal daily operations.
Exposure Level (Brightness)
Approximate Exposure Time
Outdoor sunlight (50,000 lux)
5 minutes
Window sunlight (10,000 lux)
24 minutes
Window sunlight on cloudy day (5,000 lux)
48 minutes
Indoor fl uorescent lighting (500 lux)
8 hours
For details about the capacitor operating time and daily operating conditions, see the
x
“Power Supply” section of the Specifi cations on page E-22.
Stable operation is promoted by frequent charging.
x
