Module No. 3521
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
The display panel may become black (or white, depending on the LCD type) under very high temperatures. This is temporary, and the display will return to normal at lower temperatures.
Checking the Charge Level
A display indicator shows the watch’s current charge level.
Charge Level 1: Good
All functions enabled.
Charge Level 2: Good
All functions enabled.
Charge Level 3: Low
[L] flashes on the display, and the functions below become disabled.
Dive Mode
Face illumination
Sounds (alarm, etc.)
Charge Level 4: Low
When the battery charge drops lower than Level 3, [CHG] starts to flash on the display and all functions become disabled.
Charge Level 5: Dead
The digital display will go blank if the battery goes dead. Memory data is lost, and watch settings are returned to their initial factory defaults.
Important!
Should the battery go low or go dead, expose the face (solar panel) to light as soon as possible.
Note
When [H], [M], and [L] are all flashing on the display, it means that all functions are disabled due to momentary battery power consumption.
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 |
4 minutes |
|
10,000 |
24 minutes |
|
5,000 |
48 minutes |
|
500 |
8 hours |
Charge Recovery Times
Sunny day, outdoors (50,000 lux)
|
Dead battery |
2 hours |
|
Medium charge |
26 hours |
|
High charge |
7 hours |
Medium chargeSunny day, near a window (10,000 lux)
|
Dead battery |
9 hours |
|
Medium charge |
135 hours |
|
High charge |
36 hours |
Overcast day, near a window (5,000 lux)
|
Dead battery |
19 hours |
|
Medium charge |
275 hours |
|
High charge |
73 hours |
Indoor fluorescent lighting (500 lux)
|
Dead battery |
243 hours |
|
Medium charge |
- |
|
High charge |
- |
Note
Actual charging time depends on the charging environment, watch settings, and other factors.
Power Saving Function
Leaving the watch in a dark location for about one hour between the hours of 10 p.m. and 6 a.m. will cause the display to go blank, and the watch to enter Level 1 power saving. If the watch is left in this condition for six or seven days, the watch will enter Level 2 power saving.
Power Saving Level 1:
Digital display goes blank to save power.
Power Saving Level 2:
Digital display goes blank to save power. All functions are disabled.
Recovering from Power Saving Operation
Use one of the operations below to exit power saving.
Press any button.
Move the watch to a bright location.
Trigger auto light by angling the watch towards your face.
Note
The watch will not enter power saving in the cases below.
Dive Mode
While in the Stopwatch Mode
While in the Timer Mode
You can enable or disable Power Saving.
Note that the watch also may enter power saving if its face is blocked from light by your sleeve while you are wearing it.