This section provides an overview of the watch and introduces convenient ways it can be used.

Watch Features

Phone Linking

The watch supports connection and communication with a Bluetooth capable phone.

Solar Charging

Sunlight and artificial light generate electricity for watch operation as it charges.

Time Signal Reception

The watch receives a radio signal containing time information and uses it to keep its time setting accurate.

World Time

World Time displays the current time in any of 55 cities (38 time zones)* around the globe and UTC.

Alarm

An alarm sounds whenever a time specified by you is reached.

Digital Compass

You can use the Compass Mode to determine the direction of north, and to check your bearing to a destination.

Altitude Measurement

You can use this function to take an altitude reading at your current location.
You can record the altitude, along with the date and time of the measurement.
You can also measure the altitude differential between two points.

Barometric Pressure Measurement

You can display the current barometric pressure tendency, which helps you be on the alert for noteworthy pressure changes.

Temperature Measurement

The watch can be used to take current air temperature readings.

Viewing Altitude Records

You can view or delete records of altitude measurements.

Sunrise and Sunset Times

You can look up the sunrise and sunset times for a specified date.

Stopwatch

You can use the stopwatch to measure up to 24 hours of elapsed time in units of 1/100 of a second.

Timer

Countdown from a start time specified by you. An alarm sounds when the countdown reaches zero.

General Guide

1. Function hand

2. Hour hand

3. Second hand

4. Minute hand

5. Bearing hand

6. Day of the week

7. Month, day

8. Crown

A button

Pressing this button in the Timekeeping Mode enters the Altimeter Mode.

B button

Each press cycles between watch modes.

In any mode, hold down this button for at least two seconds to return to the Timekeeping Mode.

C button

Pressing this button in the Timekeeping Mode enters the Compass Mode.

D button

Pressing this button in the Timekeeping Mode cycles between displays.

E button

Press to turn on illumination.

Watch Face and Display Indicators

1. The function hand indicates the altitude or barometric pressure difference.

2. The function hand indicates the current charge level after you enter the Timekeeping Mode.

3. The bearing hand indicates the bearing to a destination (in Bearing Memory) or to a location you recorded (in Location Memory).

4. When the watch is connected with a phone, the second hand points to .

5. The second hand points to [RC] while the watch is standing by for connection with a phone.

6. Displayed when an alarm is turned on.

7. Appears when the hourly time signal is on.

8. Displayed when the indicated time is summer time.

9. Displayed while barometric pressure change indication is enabled.

10. Shows the barometric pressure measurement unit.

11. Flashes while the watch’s hands are shifted for easier reading.

12. Displayed while Route Log is enabled.

13. Displayed after time adjustment using time signal reception or connection with a phone was successful.

The [RCVD] indicator will disappear in the cases below.

After you use watch operations to change Home City settings (time and date, city, summer time)

After the watch switches between standard time and summer time

After a time signal receive operation fails

After a phone-based time adjustment operation fails

Navigating Between Modes

Your watch has the modes shown below.

To return to the Timekeeping Mode from any other mode, hold down (B) for at least two seconds.

Use the buttons in the illustration above to navigate between modes.

Mode Overview

Timekeeping Mode

In this mode, the digital display shows the current day of the week, month, and day.
You can also use (D) to scroll display contents through the items below.

Barometric pressure graph, month, day

Hour, minute, second

Note

To perform operations with CASIO WATCHES, you first need to pair the watch with the phone where the app is installed.

Pair the watch with a phone.

Altimeter Mode

Use this mode to take an altitude reading for your current location.

Altitude Measurement

1. Altitude differential indicator

2. Altitude graph

3. Altitude

Compass Mode

Use this mode to take direction and bearing angle readings.

Digital Compass

1. North indication

2. Bearing Memory/Location Memory Bearing

3. Bearing at 12 o’clock

4. Bearing angle at 12 o’clock

Barometer Mode

Use this mode to take barometric pressure readings at your current location.

Barometric Pressure Measurement

1. Pressure Differential Indicator

2. Barometric pressure graph

3. Barometric pressure

Thermometer Mode

Use this mode to take temperature readings at your current location.

Temperature Measurement

1. Temperature

Altitude Record Recall Mode

Use this mode to view altitude records.

Viewing Altitude Records

1. Number of the record displayed last time the Altitude Record Recall Mode was used

Sunrise/Sunset Mode

Use this mode to check the sunrise and sunset times for your Home City.

Sunrise and Sunset Times

1. Year, month, day

2. Sunrise time

3. Sunrise indicator

4. Sunset time

5. Sunset indicator

Stopwatch Mode

Use this mode to measure elapsed time.

Stopwatch

1. Stopwatch hours

2. Stopwatch minutes

3. Stopwatch seconds

4. Stopwatch: 1/100 second

Timer Mode

Use this mode to countdown from a desired start time.

Timer

1. Timer minutes

2. Timer seconds

Alarm Mode

The watch will beep when an alarm time is reached.

Alarm

1. Alarm number

2. Alarm or hourly time signal status (on/off)

3. Alarm hour/minute

World Time Mode

This mode shows the current time in 55 cities and UTC (Coordinated Universal Time) time.

World Time

1. Home City time

2. World Time City

3. World Time City current time

Receive Mode

With this mode, you can receive a time signal manually.

Time Adjustment Using a Time Signal

1. Receive level indicator

Connecting with a Paired Phone to Correct the Watch’s Time

Press (A).

Triggering Immediate Time Correction

Searching for a Paired Phone

Hold down the (A) button for about five seconds.

Phone Finder

Using the Crown

The watch’s crown is a screw-in (screw lock) type. To use the crown, you first need to rotate it towards you (leftwards) to loosen it.

Important!

To prevent loss of water resistance and/or damage due to impact, be sure to screw the crown in by rotating it away from you as you push it in.

When pushing the crown back in, take care not to apply too much force.

Fast Forward/Fast Reverse

After pulling out the crown, rotating it quickly in succession in either direction will start a fast forward or fast reverse operation. While adjusting the time setting manually using watch operations, rotating the crown quickly in succession again while a fast forward operation is in progress will cause the hour and minute hands to move faster.

Stopping Fast Forward/Fast Reverse

Rotate the crown in the direction opposite that of the ongoing operation or press any button.

Note

If you do not perform any operation for about two minutes after pulling out the crown, crown operations will automatically become disabled. If that happens, push the crown back in and then pull it out again.
If operation after pulling the crown is disabled, the display will appear as shown below immediately after you pull out the crown. If that happens, push the crown back in and lock it.

Shifting the Hands

Hand shift moves the hands out of the way for easy viewing of display information.

1. While holding down (E), press (B).

This shifts the analog hands to allow easy viewing of display information.



2. To return the hands to their normal timekeeping positions, hold down (E) as you press (B) again, or press (B) to change to another mode.

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

When you enter the Timekeeping Mode, a display indicator and the function hand show the watch’s current charge level.

1. Good (Charge Level 1)

2. Good (Charge Level 2)

3. Low (Charge Level 3)

The display will show charge levels 4 and 5, even if the watch is not in the Timekeeping Mode.

Charge Level 1: Good

All functions enabled.

Charge Level 2: Good

All functions enabled.

Charge Level 3: Low

The functions below are disabled. Also, the second hand jumps at two-second intervals.

Time signal reception

Compass, altitude, barometric pressure, temperature measurements

Face illumination

Sounds (alarms, etc.)

Connection with a phone

Charge Level 4: Low

Battery charge is lower than Level 3, and all functions are disabled. Also, all hands are stopped.

Charge Level 5: Dead

All hands are stopped and digital displays are blank. 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

If [RECOVER] is flashing on the display, it means that all functions are disabled due to momentary battery power consumption.

[RECOVER] is flashing on the display.

Exposing the watch face to light after the battery goes dead causes the [CHARGE] indicator to appear. This indicates charging has started.

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	20 hours
High charge Full charge	6 hours

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

Dead battery Medium charge	6 hours
Medium charge High charge	73 hours
High charge Full charge	20 hours

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

Dead battery Medium charge	9 hours
Medium charge High charge	119 hours
High charge Full charge	32 hours

Indoor fluorescent lighting (500 lux)

Dead battery Medium charge	104 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 Function

Leaving the watch in a dark location for about one hour between the hours of 10 p.m. and 5:50 a.m. causes the display to go blank and then the watch enters Level 1 power saving. If the watch is left in this condition for six or seven days, it enters Level 2 power saving.

Power Saving Level 1:

The second hand stops at 12 o’clock and the digital display goes blank to save power. The watch can connect with a phone at this level.

Power Saving Level 2:

All hands stop and the 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 Full Auto Light by angling the watch towards your face.

Note

The watch will not enter power saving in the cases below.

While in the Stopwatch Mode

While in the Timer Mode

While the barometric pressure change indicator is displayed

You can enable or disable Power Saving.

Configuring Power Saving Function Settings

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

Viewing the Face in the Dark

The face of the watch can be illuminated for viewing in the dark.

To illuminate the face manually

Press (E) to turn on illumination.

Illumination turns off automatically if an alarm starts to sound or if you perform a crown operation.

Illumination does not turn on while a signal receive operation or a hand movement operation is in progress. Also, illumination may not turn on while a sensor is taking a reading.

To illuminate the face when Auto Light is enabled

If Full Auto Light is enabled, face illumination turns on automatically whenever the watch is positioned at an angle of 40 degrees or more.

Important!

Auto Light may not operate properly when the watch is at a horizontal angle of 15 degrees or greater from horizontal as shown in the illustration below.

Electro-static charge or magnetism can interfere with proper Full Auto Light operation. If this happens, try lowering your arm and then angle it towards your face again.

When moving the watch you may note a slight rattling sound. This is the sound of Full Auto Light switch operation and does not indicate malfunction.

Configuring the Full Auto Light Setting

You can enable or disable Full Auto Light as required.

1. Enter the Timekeeping Mode.

Navigating Between Modes

2. Loosen the crown and then pull it out.

The currently selected Home City will appear on the display.



3. Press (B) three times.

[] appears on the display with [ON] or [OFF] flashing.



4. Rotate the crown to enable or disable Full Auto Light.

5. Push the crown back in and then lock it.

Specifying the Illumination Duration

You can select either 1.5 seconds or three seconds as the illumination duration.

1. Enter the Timekeeping Mode.

Navigating Between Modes

2. Loosen the crown and then pull it out.

The currently selected Home City will appear on the display.



3. Press (B) four times.

[LIGHT] appears on the display with [1] or [3] flashing.

4. Rotate the crown to select an illumination duration.

[1]: 1.5-second illumination

[3]: 3-second illumination



5. Push the crown back in and then lock it.

Useful Features

Pairing the watch with your phone makes a number of the watch’s features easier to use.

Auto time correction

Selection of More Than 300 World Time cities

Use your phone to check the distance and bearing to a point in Location Memory

Use your phone to record route waypoints and their altitudes

In addition, a number of other watch settings can be configured using your phone.

To transfer data to a watch and to configure settings, you first need to pair the watch with your phone.

Your phone needs to have the “CASIO WATCHES” phone app installed to pair with the watch.