USER’S GUIDE 2611
Battery
This watch is equipped with a solar cell and a rechargeable battery (secondary battery) that is charged by the electrical power produced by the solar cell. The illustration shown below shows how you should position the watch for charging.
| Example: Orient the watch so its | Solar cell |
| face is pointing at a light source. |
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| • Note that charging efficiency |
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| drops when any part of the solar |
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| cell is blocked by clothing, etc. |
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| • The illustration shows how to |
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| position a watch with a resin band. |
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Important!
•Storing 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 rechargeable battery power to run down. Be sure that the watch is normally exposed to bright light whenever possible.
•This watch employs a solar cell that converts light into electricity, which charges a
•The rechargeable battery should be replaced with a
•All data stored in memory is deleted, and the current time and all other settings return to their initial factory defaults whenever battery power drops to Level 4 and when you have the battery replaced.
•Turn on the watch’s Power Saving function and keep it in an area normally exposed to bright light when storing it for long periods. This helps to keep the rechargeable battery from going dead.
Battery Power Indicator
The battery power indicator on the display shows you the current status of the rechargeable battery’s power.
| Battery power indicator | Level | Battery Power | Function Status |
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| All functions enabled. |
| 2 |
| All functions enabled. |
| 3 |
| Beeper tone, backlight, |
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| display, and buttons are |
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| (Charge Soon Alert) |
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| 4 |
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| timekeeping, are disabled. | |
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•The flashing CHARGE indicator at Level 3 tells you that battery power is very low, and that exposure to bright light for charging is required as soon as possible.
•At Level 4, all functions are disabled and settings return to their initial factory defaults. Functions are enabled once again after the rechargeable battery is charged, but you need to set the time and date, after the battery reaches Level 3 (indicated by flashing CHARGE indicator) from Level 4. You will not be able to set any of the other settings until the battery reaches Level 2 (no CHARGE indicator) after dropping to Level 4.
•Leaving the watch in direct sunlight or some other very strong light source can cause the battery power indicator to temporarily show a reading that is higher than the actual battery level. The correct battery power indicator should appear after a few minutes.
•If you use the backlight or any of the alarm functions a number of times during a short period, RECOVER appears on the display and the following operations become disabled until battery power recovers.
Backlight Beeper toneAfter some time, battery power will recover and RECOVER will disappear, indicating that the above functions are enabled again.
Charging Precautions
Certain charging conditions can cause the watch to become very hot. Avoid leaving the watch in the areas described below whenever charging its rechargeable battery. Also note that allowing the watch to become very hot can cause its liquid crystal display to black out. The appearance of the LCD should become normal again when the watch returns to a lower temperature.
Warning!
Leaving the watch in bright light to charge its rechargeable battery 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.
•On the dashboard of a car parked in direct sunlight•Too close to an incandescent lamp•Under direct sunlightCharging Guide
After a full charge, timekeeping remains enabled for up to about 12 months, while the watch is used under the conditions described below.
Operating Conditions
•Watch is not exposed to light•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•1 countdown timer operation per dayCharge Times
Exposing the watch to light for the periods shown below each day restores the power used by the above operating conditions.
Exposure Level (Brightness) | Approximate Exposure Time |
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| Outdoor Sunlight (50,000 lux) | 5 minutes |
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| Sunlight Through a Window (10,000 lux) | 24 minutes |
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| Daylight Through a Window on a Cloudy Day | 48 minutes |
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| Indoor Fluorescent Lighting (500 lux) | 8 hours |
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Recovery Times
The table below shows the amount exposure that is required to take the battery from one level to the next.
Exposure Level | Approximate Exposure Time |
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| Level 4 |
| Level 3 |
| Level 2 |
| Level 1 | |||||
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Outdoor Sunlight (50,000 lux) | 90 minutes |
| 25 hours |
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| Sunlight Through a Window | 6 hours |
| 126 hours |
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| Daylight Through a Window | 11 hours |
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| on a Cloudy Day (5,000 lux) |
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•The above exposure time values are all for reference only. Actual required exposure times depend on lighting conditions.
Reference
This section contains more detailed and technical information about watch operation. It also contains important precautions and notes about the various features and functions of this watch.
Power Saving Function
When turned on, the Power Saving function automatically enters a sleep state whenever the watch is left in an area where it is dark for 60 to 70 minutes. The sleep state is indicated by a blank screen with P.SAVE flashing on it. In the sleep state, all functions are enabled, except for the display.
•Wearing watch inside the sleeve of clothing can cause it to enter the sleep state.
•The watch will not enter the sleep state between 6:00 AM and 10:59 PM. If the watch is already in the sleep state when 6:00 AM arrives, however, it will remain in the sleep state.
•The watch will not enter the sleep state while it is in the Countdown Timer Mode or Stopwatch Mode.
To recover from the sleep state
Perform any one of the following operations.•Move the watch to aTo turn Power Saving on and off
1.In the Timekeeping Mode, hold down A until the seconds start to flash, which indicates the setting
screen.
2. Press C eight times until the Power Saving on/off screen appears.3. Press D to toggle Power Saving on (ON) and off (OF).4. Press A twice to exit the setting screen.
•The Power Saving on indicator (P.SAVE) is on the display in all modes while the Power Saving is turned on.
Moon Phase Indicator
The Moon phase indicator of this watch indicates the current phase of the Moon as shown below.
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Moon Phase |
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Indicator |
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Moon Age | 0, 1, 29 | 2 - 5 | 6 - 9 |
| 10 - 13 | 14 - 16 | 17 - 20 | 21 - 24 | 25 - 28 | ||
Moon Phase | New |
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| Quarter |
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•The Moon phase indicator shows the Moon as viewed at noon from a position in the Northern Hemisphere looking south. Note that at times the image shown by the Moon phase indicator may differ from that of the actual Moon in your area.
•The
Moon Phases and Moon Age
The Moon goes through a regular
*The angle to the Moon in relation to the direction at which the Sun is visible from the Earth.
The Moon age indicates the number of days from the New Moon to any particular phase. It is normally calculated using either noon or midnight as a reference point. This watch calculates the Moon age based on the angular distance of the Moon at noon, which can result in an error of ± 1 day. Because of this, the appearance of the Moon phase indicator may be different from that of the actual Moon.
The watch uses the following formula to calculate Moon age. Moon Age (days) = 29.53 ⋅ (Moon angular distance / 360°)
Tide Graph
The wave on the watch’s tide graph indicates the current tide. 
indicates that the tide is currently rising, while 
indicates a falling tide. Neither 
nor 
is on the display at high tide and low tide.
Falling |
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Rising | Low tide |
Tidal Movements
Tides are the periodic rise and fall of the water of oceans, seas, bays, and other bodies of water caused mainly by the gravitational interactions between the Earth, Moon and Sun. Tides rise and fall about every six hours. The tide graph of this watch indicates tidal movement based on the Moon’s transit over a meridian and the lunitidal interval. The lunitidal interval differs according to your current location, so you must specify a lunitidal interval in order to obtain the correct tide graph readings.
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