Module No. 5666

Charging

This watch runs on power supplied from a rechargeable (secondary) battery that is charged by a solar panel. The solar panel is integrated into the face of the watch, and power is generated whenever the face is exposed to light.

Charging the Watch

When you are not wearing the watch, put it in a location where it is exposed to bright light.

While you are wearing the watch, make sure that its face (solar panel) is not blocked from light by the sleeve of your clothing. Power generation efficiency is reduced even when the face of the watch is blocked only partially.

Important!

Depending on light intensity and local conditions, the watch may become hot to the touch when exposed to light for charging. Take care to avoid burn injury after charging. Also, avoid charging the watch under high-temperature conditions like the ones described below.

On the dashboard of a vehicle parked in the sun

Near an incandescent light bulb or other source of heat

Under direct sunlight or in other hot areas for long periods

Remaining Charge and Dead Battery

You can determine if the charge level is low by checking the hand movement. Functions become disabled as battery power goes low.

Important!

Should the battery go low or go dead, expose the face (solar panel) to light as soon as possible.

Note

Exposing the watch face to light after the battery goes dead will cause the second hand to revolve counterclockwise until it stops at second 57. This indicates charging has started.

Low Battery Power

The second hand jumps at two-second intervals.

Dead Battery

All hands and the day indicator are stopped.

Charging Time Guidelines

The table below shows guidelines for approximate charging times.

Charging Times Required for 1 Day of Operation

Light Level (Lux)	Approximate Charging Time
50,000	8 minutes
10,000	30 minutes
5,000	48 minutes
500	8 hours

Charge Recovery Times

Sunny day, outdoors (50,000 lux)

Dead battery Medium charge	2 hours
Medium charge High charge	17 hours
High charge Full charge	5 hours

Sunny day, near a window (10,000 lux)

Dead battery Medium charge	5 hours
Medium charge High charge	64 hours
High charge Full charge	17 hours

Overcast day, near a window (5,000 lux)

Dead battery Medium charge	8 hours
Medium charge High charge	103 hours
High charge Full charge	28 hours

Indoor fluorescent lighting (500 lux)

Dead battery Medium charge	90 hours
Medium charge High charge	-
High charge Full charge	-

Note

Actual charging time depends on the charging environment, watch settings, and other factors.

Power Saving

Leaving the watch in a dark location for about one hour between the hours of 10 p.m. and 5:50 a.m. will cause the second hand to stop, and the watch to enter Level 1 power saving. If the watch is left in this condition for six or seven days, all hands will stop and the watch will enter Level 2 power saving.

Level 1:

Basic timekeeping functions are operational.

Level 2:

Only the day indicator is operational.

Note

Note that the watch also may enter the power saving state if its face is blocked from light by your sleeve while you are wearing it.

The watch will enter power saving when it is in one of the modes below.

Calendar Mode

Stopwatch Mode (reset to all zeros)

Recovering from Power Saving Operation

Press any button, perform a crown operation, or place the watch in a well-lit area to recover from power saving.