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Operation Guide 3257
E-40
Backlight Precautions
• The illumination provided by the backlight may be hard to see when viewed under
direct sunlight.
• The backlight automatically turns off whenever an alarm sounds.
• Frequent use of the backlight shortens the battery life.
Auto light switch precautions
• Wearing the watch on the inside of your wrist and movement or vibration of your arm
can cause the auto light switch to activate and illuminate the display. To avoid
running down the battery, turn off the auto light switch whenever engaging in
activities that might cause frequent illumination of the display.
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• The backlight may not light if the face of the watch is
more than 15 degrees above or below parallel. Make
sure that the back of your hand is parallel to the ground.
• The backlight turns off in about one second, even if you
keep the watch pointed towards your face.
• Static electricity or magnetic force can interfere with
proper operation of the auto light switch. If the backlight
does not light, try moving the watch back to the starting
position (parallel with the ground) and then tilt it back
toward you again. If this does not work, drop your arm
all the way down so it hangs at your side, and then bring
it back up again.
• Under certain conditions, the backlight may not light until
about one second after you turn the face of the watch
towards you. This does not necessarily indicate
malfunction of the backlight.
More than 15 degrees
too high
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Specifications
Accuracy at normal temperature: ± 30 seconds a month
Timekeeping: Hour, minutes, seconds, p.m. (P), year, month, day, day of the week
Time format: 12-hour and 24-hour
Calendar system: Full Auto-calendar pre-programmed from the year 2000 to 2039
Stopwatch: Time and distance measurements
Measuring unit: 1/100 seconds (lower part of the display for first 60 minutes, center
part of the display for first 10 hours) or 1 second (lower part of the
display for after 60 minutes, center part of the display for after 10
hours); 0.1 mile or km
Measuring capacity: 99:59'59"; 99.9 miles or km; 999.9 miles or km (total distance
covered)
Measuring modes: Elapsed time, lap/split times
Memory capacity: 61 records (used by lap/split time records and log title screens);
total distance covered
Basic data input: Stride length
Other: Pacer signal; Lap/split number (from 01 to 99); Best lap time screen
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Countdown Timer:
Measuring unit: 1 second
Input range: 1 minute to 100 hours (1-minute increments and 1-hour increments)
Other: Auto-repeat timing
Alarms: 5 daily alarms (Four one-time alarms; one snooze/one-time alarm); Hourly
Time Signal
Dual Time: Hour, minutes, seconds, p.m. (P)
Other: Backlight (light-emitting diode); Auto Light Switch
Battery: One lithium battery (Type: CR2025)
Approximately 10 years on type CR2025 (assuming alarm operation 10 sec./day,
one backlight operation 1.5 sec./day, and stopwatch operation with pacer signal
(pacer value: 120) 30 sec./week)