Operation Guide 4343

Solar Charging

Your watch runs on electrical power generated from light and stored by a chargeable battery. To ensure stable operation, make sure that the watch is exposed to light as much as possible.

Whenever you are not wearing the watch on your wrist, position it

When wearing the watch, try to keep your sleeve from blocking its

so the face (solar cell) is pointed in the direction of a source of

face, where the solar cell is located.

bright light.

 

 

 

 

 

 

 

 

 

Solar Cell

 

 

 

 

 

 

 

 

 

 

Light

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Charging efficiency is reduced significantly even if the face of the

Leave the watch under fluorescent lighting, near a window, etc.

watch is covered only partially by your sleeve.

How the solar cell and battery work

When exposed to light

Light

Solar cell

 

(Converts light to power.)

Electrical Energy

Charge

Rechargeable

Battery

Power supplied to watch

When not exposed to light

Rechargeable

Discharge

Battery

 

Power supplied to watch

Your watch continues to operate even when it is not exposed to light. Leaving the watch in the dark can run down its battery and cause functions to become disabled.

Charging Precautions

Avoid charging the watch in the following locations, and anywhere else where the watch may become very hot.

On the dashboard of an automobile parked in the sun

Very close to an incandescent light source or other sources of heat

In a location exposed to direct sunlight for long periods

Depending on the light source you are using, the case of the watch may become quite hot when charging. Take care to guard against burn injury after charging.

Low Battery Alert

When secondary battery power is low, the second hand of the watch will start to jump at 2-second intervals to let you know that charging is required.

Normal Operation

Low Battery Alert

Disabled State

 

 

Hands stop

 

 

at 12 o’clock.

 

When battery

If power drops

 

even more...

 

runs low

 

 

30

1

1

 

Home Position

 

 

The second, hour, and

 

 

minute hands all stop at 12

 

 

o’clock.

Jumps 1 second.

Jumps 2 seconds.

 

At midnight, the date indicator will change to 1 (which is the home position).

Important!

The following functions are disabled when battery power is low.

Auto receive and manual receive

Alarm beeper

Even if the battery level drops to the point that timekeeping stops, you still will be able to recharge the battery and use the watch again.

When you recharge the battery after it drops to a level where timekeeping stops, the hands will move automatically to the current time setting.

Try to keep the watch exposed to light as much as possible during normal use.

Charging Guide

Required Charging Time for One Day of Operation

Based on six minutes of signal reception and 10 seconds of alarm per day.

Exposure Level (Brightness)

Charging Time

 

 

Outdoor Sunlight (50,000 lux)

8 minutes

 

 

Sunlight through a Window (10,000 lux)

30 minutes

 

 

Overcast Daylight through a Window (5,000 lux)

48 minutes

 

 

Indoor Fluorescent Lighting (500 lux)

8 hours

 

 

Making sure the watch is exposed to light ensures stable operation.

Approximate Charge Times Required to Advance to a Higher Level

Exposure Level

 

Charging Time

 

 

 

(Brightness)

Until Hand Movement

Until Full Charge

 

Restarts

 

 

 

 

Outdoor Sunlight

1 hours

 

21 hours

(50,000 lux)

 

 

 

 

 

 

 

 

Sunlight through a

2 hours

 

77 hours

Window (10,000 lux)

 

 

 

 

 

 

 

 

Overcast Daylight through

4 hours

 

– – –

a Window (5,000 lux)

 

 

 

 

 

 

 

 

Indoor Fluorescent

35 hours

 

– – –

Lighting (500 lux)

 

 

 

 

 

 

 

 

Note that the above charging times are for reference only. Actual charging time depends on a variety of environmental factors.

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