Operation Guide 5098/5099/5101
When wearing the watch, make sure that its face is not blocked from light by the sleeve of your clothing.
ξThe watch may enter a sleep state (page
blocked by your sleeve even only partially.
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 regular timekeeping.
ξ If the x Second Hand is moving normally at
ξ If the x Second Hand is moving at
Moves at
Level | Hand Movement | Function Status | |
1 | Normal. | All functions enabled | |
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2 | x Second Hand moves at | Time calibration signal reception | |
intervals. | disabled | ||
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3 | z Hour Hand, x Second Hand and | All functions disabled | |
c Minute Hand stopped at 12 o’clock. | |||
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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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Charging Times
| Daily |
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| Level Change *2 | |||||
Exposure Level (Brightness) |
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| Level 3 | Level 2 |
| Level 1 | |||
Operation *1 |
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Outdoor sunlight (50,000 lux) | 8 minutes |
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| 3 hours |
| 35 hours | |||
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Window sunlight (10,000 lux) | 30 minutes |
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| 8 hours | 134 hours | ||||
Window sunlight on cloudy day | 48 minutes |
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| 13 hours | 216 hours | ||||
(5,000 lux) |
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Indoor fluorescent lighting (500 lux) | 8 hours |
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| 149 hours |
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*1 Approximate exposure each day to generate power for normal daily operation.
*2 Approximate exposure to take power up one level.
ξThe above times are for reference only. Actual times depend on lighting conditions.
ξFor details about the operating time and daily operating conditions, see the “Power Supply” section of the Specifications (page
Power Saving
Power Saving enters a sleep state automatically whenever the watch is left for one week in an area where it is dark.
What happens when the watch is in the sleep state
ξAll regular timekeeping hands move to 12 o’clock and stop. n Minute Hand (elapsed time) moves to 0 and stops.
ξAuto Receive becomes disabled.
ξInternal timekeeping functions continue to operate normally.
To recover from the sleep state
Move the watch to a
ξIt can take up to 14 minutes for the watch to recover from the sleep state to normal operation. Do not perform any button operations during that time.
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 “Specifying Your Current Location and Setting the Time” (page
This section explains how the watch updates its time settings when the city name selected as the current location is in Japan or China, and is one that supports time calibration signal reception.
If your location setting is this: The watch can receive the signal from the transmitter located here:
HONG KONG (HKG) | Shangqiu City (China) |
TOKYO (TYO) | Fukushima (Japan), Fukuoka/Saga (Japan) |
Approximate Reception Ranges
Japanese Signal | Chinese Signal | ||
500 kilometers Fukushima | 500 kilometers | Changchun | |
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| Beijing |
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| Shangqiu |
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| Shanghai |
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| Chengdu |
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| Hong Kong |
Fukuoka/Saga | 1,000 kilometers | 1,500 kilometers | |
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ξEven when the watch is within range of a transmitter, signal reception may be impossible due to the effects of geographic contours, structures, weather, the time of year, the time of day, radio interference, etc. The signal becomes weaker at distances of approximately 500 kilometers, which means that the influence of the above conditions becomes even greater.
ξSignal reception may not be possible at the distances noted below during certain times of the year or day. Radio interference may also cause problems with reception.
−Fukushima or Fukuoka/Saga (Japan) transmitters: 500 kilometers (310 miles)
−Shangqiu (China) transmitter: 500 kilometers (310 miles)
ξAs of January 2011, China does not use Daylight Saving Time (DST). If China does go to the Daylight Saving Time system in the future, some functions of this watch may no longer operate correctly.
ξUsing this watch in a country covered by a time calibration that is different from the countries it supports may result in incorrect time indication due to local application of summer time, etc.
To get ready for a receive operation
1.The antenna of this watch is located on its 12 o’clock side. Position the watch with 12 o’clock facing towards a window as shown in the nearby illustration. Make sure there are no metal objects nearby.
ξ Signal reception normally is better at night.
12 o’clock | ξ The receive operation takes from | |
two to seven minutes, but in some | ||
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or | cases it can take as long as 14 | |
minutes. Take care that you do not | ||
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| perform any button operation or | |
| move the watch during this time. |