Module No. 5671

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!

Some light sources and environments can cause the watch to become extremely hot during charging, which creates the risk of burn injury and damage to internal watch components.
Avoid charging the watch under conditions like the ones described below, where the temperatures may exceed 60 °C (140 °F).

On the dashboard of a vehicle parked in the sun

Near incandescent lamps, camera lights, halogen lamps, or other sources of heat

In locations exposed to direct sunlight for long periods and other hot locations

Checking the Charge Level

Pushing the crown back in after pulling it out will cause the mode hand to indicate the current charge level. After a short while, the mode hand will indicate the current day of the week.

Low Battery
Good (medium charge)
Good (high charge)

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

Times Required to Achieve Next Charge Level

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	18 hours

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

Dead battery Medium charge	8 hours
Medium charge High charge	104 hours
High charge Full charge	28 hours

Indoor fluorescent lighting (500 lux)

Dead battery Medium charge	92 hours
Medium charge High charge	-
High charge Full charge	-

Note

Actual charging time depends on the local charging environment.

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.

World Time 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.