Operation Guide 2891
Keep your watch exposed to light!
Your watch runs on electrical power generated from light and stored by a chargeable battery.
To ensure stable operation, make sure that the solar cell of the watch is exposed to light as much as possible.
3. Tips on how to keep the battery charged.
•Try to ensure that the watch is always exposed to enough light to keep its battery indicator at LEVEL 1 or LEVEL 2. Some of the watch’s functions are disabled when battery power drops to LEVEL 3.
•When wearing the watch, try to keep your sleeve from blocking its face (solar cell).
1. How the solar cell and battery work
When exposed to light
Light
Solar cell
Electrical energy
Charge
Rechargeable battery
Power supplied to watch
When not exposed to light
Discharge
Rechargeable 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.
2. Avoid overuse of display illumination.
•Over use of display illumination can run down the battery.
Discharge
Recharge-
able battery
Power supplied to watch
The following shows approximately how much exposure to light is required to recharge the battery by the amount used by one display illumination operation.
•Sunlight through a window: 5 minutes
•Indoor fluorescent lighting: 50 minutes
Care is required when using the full auto light switch, which can cause frequent display illumination.
Light |
|
| |
| Battery Indicator | ||
| Level 1 | All functions | |
| Level 2 | enabled | |
|
| ||
Recharge- | Level 3 | Some | |
| functions | ||
able battery | Level 4 | ||
disabled | |||
•Whenever you are not wearing the watch on your wrist, position it so the face (solar cell) is pointed in the direction of a source of bright light.
Solar Cell
Light
Leave the watch under fluorescent lighting, near a window, etc.
Charging efficiency is significantly reduced even if the face of the watch is only partially covered by your sleeve.
Using Your Watch for Mountain Climbing
Your watch has a number of built in sensors that allow you to take direction, altitude, barometric pressure, and temperature readings while mountain climbing or hiking.
. Before getting started...
Check changes in barometric pressure to get an idea of what kind of weather to expect.
•See “Taking Pressure and Temperature Readings” for more information.
Pressure Tendency Graph
Barometric | |
Pressure | Pressure |
| Differential |
| Graphic |
| Temperature |
| Pressure/Temperature Mode |
. After you start climbing...
•Monitor the altitude on the display to see how high you have climbed. You can also record altitude records (including date and time) in memory.
•See “Taking Altitude Readings” for more information.
| Altitude Graph |
| Altitude |
Altitude | Differential |
| Graphic |
| Current Time |
| Altitude Mode |
•Use the digital compass to keep track of your current bearing.
•See “Taking Direction Readings” for more information.
Digital Compass
Direction 
Angle
Current Time
Compass Mode
•You can also keep track of the current barometric pressure and temperature while climbing.
•See “Taking Pressure and Temperature Readings” for more information.
Pressure Tendency Graph
Barometric 
Pressure
Temperature
Pressure/Temperature Mode
. After you get back home...
Recall altitude records from memory to retrace your climb and to make plans for your next climb.
•See “Viewing Altitude Memory Records” for more information.
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