Operation Guide 5263

Charging the Watch

The face of the watch is a solar panel that generates power from light. The generated power charges a built-in rechargeable battery, which powers watch operations. The watch charges whenever it is exposed to light.

Charging Guide

Whenever you are not

 

When wearing the watch,

wearing the watch, be sure

 

make sure that its face is

 

to leave it in a location

 

not blocked from light by the

where it is exposed to light.

 

sleeve of your clothing.

ξ Best charging

 

ξ The watch may enter a

performance is achieved

 

sleep state (page E-16) if

by exposing the watch to

 

its face is blocked by your

light that is as strong as

 

sleeve even only partially.

possible.

 

 

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Warning!

Leaving the watch in bright light for charging can cause it to become quite hot. Take care when handling the watch to avoid burn injury. The watch can become particularly hot when exposed to the following conditions for long periods.

ξOn the dashboard of a car parked in direct sunlight

ξToo close to an incandescent lamp

ξUnder direct sunlight

Important!

ξKeep the watch in an area normally exposed to bright light when storing it for long periods. This helps to ensure that power does not run down.

ξStoring the watch for long periods in an area where there is no light or wearing it in such a way that it is blocked from exposure to light can cause power to run down. Make sure that the watch is exposed to bright light whenever possible.

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Power Levels

You can get an idea of the watch’s power level by observing the movement of the x Second Hand in the Timekeeping Mode. See “Hand Movement and Function Status” (page E-13).

If the x Second Hand is moving normally at one-second intervals, power is at Level 1.

Low Battery Alert

If the x Second Hand is moving at two-second intervals, power is at Level 2, which is quite low. Expose the watch to light as soon as possible so it can charge.

Moves at two-second intervals.

Hand Movement and Function Status

Level

Hand Movement

Function Status

1

Normal.

All functions enabled.

 

 

 

 

x Second Hand moving at two-second

Beeper, time calibration signal

2

intervals.

reception, and countdown timer

 

m Day Indicator changes to 1 (home position).

operation disabled.

3

x Second Hand stopped.

All functions disabled.

z Hour Hand and c Minute Hand stopped

 

at 12 o’clock.

 

ξWhen power drops to Level 3, all functions will be disabled but the watch will continue to keep time internally for about one week. If you recharge the battery sufficiently during this period, the analog hands will move automatically to the correct setting and regular timekeeping will resume. After one week, all settings (including timekeeping) will be cleared. Recharging the battery will reset all settings to their initial factory defaults.

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Power Recovery Mode

The watch is designed to go into a power recovery mode that stops hand operation temporarily whenever power suddenly drops below a certain level due to overuse of the alarm tone over a short period. Note that all operations are disabled while the watch is in the power recovery mode.

The hands will move to the correct positions and the watch will resume normal operation after power recovers (in about 15 minutes). Putting the watch in a location where it is exposed to light will help power to recover sooner.

Charging Times

 

Daily

 

 

Level Change *2

Exposure Level (Brightness)

Operation

 

Level 3

 

Level 2

Level 1

 

*1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Outdoor sunlight (50,000 lux)

8 minutes

 

2 hours

23 hours

 

 

 

 

 

 

 

Window sunlight (10,000 lux)

30 minutes

 

6 hours

85 hours

Window sunlight on cloudy day

48 minutes

 

8 hours

138 hours

(5,000 lux)

 

 

 

 

 

 

 

 

 

Indoor fluorescent lighting (500 lux)

8 hours

 

92 hours

– – –

* 1 Approximate exposure each day to generate power for normal daily operation. * 2 Approximate amount exposure time required to take power up one level.

ξ The above exposure times all are for reference only. Actual exposure times depend on lighting conditions.

ξ For details about the operating time and daily operating conditions, see the “Power Supply” section of the Specifications (page E-77).

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Power Saving

Power Saving enters a sleep state automatically whenever the watch is left for a certain period in an area where it is dark. The table below shows how watch functions are affected by Power Saving.

ξThere actually are two sleep state levels: “second hand sleep” and “function sleep”.

Elapsed Time in Dark

Operation

60 to 70 minutes (second hand

x Second Hand only stopped at 12 o’clock, all other

sleep)

functions enabled

6 or 7 days (function sleep)

ξ All functions, including analog timekeeping, disabled

ξ Internal timekeeping maintained

 

To recover from the sleep state

Move the watch to a well-lit area or press any button.

ξThe watch will not enter a sleep state between 6:00 a.m. and 9:59 p.m. If the watch is already in a sleep state when 6:00 a.m. arrives, however, it will remain in the sleep state.

ξThe watch will not enter a sleep state while it is in the Stopwatch Mode or Countdown Timer Mode.

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Radio Controlled Atomic Timekeeping

This watch receives a time calibration signal and updates its time setting accordingly. However, when using the watch outside of areas covered by time calibration signals, you will have to adjust the settings manually as required. See “Confi guring Current Time and Date Settings Manually” (page E-38) for more information.

This section explains how the watch updates its time settings when the city code selected as the Home City is in Japan, North America, Europe, or China, and is one that supports time calibration signal reception.

If your Home City Code setting is this:

The watch can receive the signal from

the transmitter located here:

 

LONDON (LON), PARIS (PAR), ATHENS (ATH)

Anthorn (England), Mainflingen (Germany)

HONG KONG (HKG)

Shangqiu City (China)

TOKYO (TYO)

Fukushima (Japan), Fukuoka/Saga (Japan)

HONOLULU (HNL), ANCHORAGE (ANC),

 

LOS ANGELES (LAX), DENVER (DEN),

Fort Collins, Colorado (United States)

CHICAGO (CHI), NEW YORK (NYC)

 

Important!

ξThe areas covered by HONOLULU (HNL) and ANCHORAGE (ANC) are quite far from the calibration signal transmitters, so certain conditions may cause reception problems.

ξWhen HONOLULU (HNL) or HONG KONG (HKG) is selected as the Home City, only the time and date are adjusted according to the time calibration signal. You need to switch manually between standard time and daylight saving time (DST) if required. See “To toggle the Home City time between standard time and daylight saving time” (page E-36) for information about how to do this.

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