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Operation Guide 3165/3251

Illumination

Your watch uses two LEDs to illuminate the display for easy reading in the dark. In
any mode (except when the setting screen is on the display), press 

B

 to turn on

illumination for about one second.

About one second after it lights, display illumination will flash for about a half
second. After that, alert illumination will flash for about a half second.

Illumination Precautions

Illumination may be hard to see when viewed under direct sunlight.

Illumination turns off automatically whenever an alarm sounds.

Frequent use of illumination runs down the battery.

Auto Return Feature

If you leave the watch in the Alarm Mode for two or three minutes without performing
any operation, it will change to the Timekeeping Mode automatically.

If you leave a screen with flashing digits on the display for two or three minutes
without performing any operation, the watch will exit the setting screen
automatically.

Scrolling

The 

A

B

 and 

D

 buttons are used in various modes and setting screens to scroll

through data on the display. In most cases, holding down these buttons during a scroll
operation will scroll at high speed.

Specifications

Accuracy at normal temperature:

 

±

30 seconds a month

Timekeeping:

 Hour, minutes, seconds, p.m., month, day, day of the week

Time Format: 4 (selectable)

12 - 11:

12-hour format that does not distinguish between noon and
midnight, which are both displayed as 12:00

0 - 11:

12-hour format that does not distinguish between noon and
midnight, which are both displayed as 0:00

0 - 23:

24-hour format that distinguishes between noon (12:00) and
midnight (0:00)

6 - 29:

24-hour format using a day that starts at 6:00 a.m. and ends at
5:59 a.m.

Calendar system: Full Auto-calendar pre-programmed from the year 2000 to 2099
Other: Active Display on/off

Countdown Timer:

Measuring unit: 1 second
Input range: 1 minute to 60 minutes (1-minute increments)

Stopwatch

Measuring unit: 1/100 second
Measuring capacity: 59'59.99''
Measuring modes: Elapsed time

Alarm:

 Daily alarm

Dual Time:

 Hour, minutes, p.m.

Illumination:

 Two LEDs (light-emitting diodes)

Other:

Button operation tone on/off; Flash Alert (using two display illumination LEDs);
Auto Display

Battery:

 One lithium battery (Type: CR1616)

Battery Life: Approximately 2 years on type CR1616 under the following conditions

One 10-second alarm operation per day

One 1.5-second illumination per day

24 mode changes per day

100 automatic display style changes by Active Display per day

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