Performing Activity Measurement
The watch uses GPS and an accelerometer to measure and record the distance, step count, elapsed time, pace, and other data while running, walking, or engaging in other activities.
You can review recorded data on the watch or with CASIO WATCHES phone app.
Before using activity measurements, it is recommended that you configure the settings required for measurement.
Activity Overview
Your watch has 10 Activity Mode functions (activities).
You can use CASIO WATCHES phone app to add, remove, or rearrange Activity Mode functions.
Activity Measurement that Supports GPS Reception
GPS signals are used to measure distance, time, and speed.
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RUNNING (Running) |
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BIKING (Biking) |
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OPEN WATER SWIMMING (Open Water Swimming) |
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TRAIL RUNNING (Trail Running) |
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WALKING (Walking) |
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TREKKING (Trekking)* |
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OTHER ACTIVITY (Other Activities)* |
Use the CASIO WATCHES phone app to add this activity category.
Note
You may need to update your watch software to use the TREKKING and/or OTHER ACTIVITY.
Activities that Support Measurement Without GPS Signal Reception
These measurements can be performed by the watch without GPS.
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GYM WORKOUT (Strength Training, etc.) |
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INTERVAL TIMER (Interval Timer) |
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POOL SWIMMING (Pool Swimming) |
Performing Activity Measurement
Use the procedures in this section to select an activity and measure it.
To select an activity
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Display the current time screen.
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Press (C).
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Use (A) and (D) to select an activity.
This enters the Activity Mode.
Example:
For information about activity items, see the information below.
To receive GPS signals
Before performing measurements for the activities below, you should start the GPS signal receive operation before starting measurement.
RUNNING
BIKING
OPEN WATER SWIMMING
TRAIL RUNNING
WALKING
TREKKING*
OTHER ACTIVITY*
Use the CASIO WATCHES phone app to add this activity category.
If you are having trouble receiving GPS signals, move to a suitable location and try again.
Note
You may need to update your watch software to use the TREKKING and/or OTHER ACTIVITY.
-
Press (C).
This causes the watch to start searching for GPS signals.
The progress indicator shows the progress of GPS signal reception.
Note
You may need to update your watch software to display the GPS signal reception progress indicator.
When GPS reception is complete, the display switches to [GPS READY] and the watch is ready to perform activity measurement using GPS.
Note
Connect with CASIO WATCHES frequently to obtain GPS assist data automatically. This shortens the time required to receive GPS signals at the start of activity measurements.
If you press (C) without waiting for [GPS READY] to appear, a warning screen appears and then activity measurement starts using the watch’s accelerometer.
When performing measurements using the accelerometer, your movements are not tracked. To track your movements during an activity, make sure that [GPS READY] is shown on the display before you start activity measurement.
Press (E) to cancel the measurement startup and return to the GPS reception screen.
It takes about 15 seconds to about two minutes after you press (C) in step 1 until activity measurement using GPS signals becomes enabled. Under some signal reception conditions, it may take more than five minutes.
OPEN WATER SWIMMING uses GPS to measure the distance you swim. However, since GPS signals are affected by the external factors described below, it may not be possible to record distances you swim accurately.
Water surface reflects GPS signals, which affects measurement accuracy.
GPS signals are difficult to receive underwater, so GPS signals are lost whenever the watch is submerged.
To improve distance and route measurement accuracy using GPS, refer to the points below.
After successfully receiving GPS signals, wait a few minutes before starting activity measurement. This will allow the GPS sensor to warm up and provide time for the watch to download the necessary GPS information.
When swimming, make sure that the wrist where you are wearing the watch is above the surface of the water. Depending on your swimming style, distance and trajectory may not be recorded accurately.
Specify [HIGH] for the GPS signal receive interval.
To start measurement
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Press (C).
This starts activity measurement.
This displays a screen of the measurement being performed for the activity you specified with CASIO WATCHES phone app.
During activity measurement, use (A) and (D) to scroll between measurement screens.
To pause an ongoing activity measurement
Press (C). To resume a paused activity measurement, press (C) again.
Note
For activities that require GPS signal reception, you can determine if GPS measurement is possible by checking the 
icon.
Not Flashing: GPS measurement is possible
Flashing: GPS measurement is not possible (Watch is searching for GPS signals.)
If 
appears on the display after [GPS READY] is displayed, it means the GPS signal has been lost, and the watch is searching for it.
If is flashing or if is displayed while activity measurement is in progress, tracking of the activity will not be recorded.
If you enter the function settings before starting an activity measurement operation, GPS measurement pauses temporarily. The watch starts searching for GPS signals again when you exit the settings.
When using GPS for run timing, wait until [GPS READY] appears on the display before you start.
To end activity measurement
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While an activity measurement operation is in progress, press (C).
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Use (D) to select [SAVE].
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Press (C).
This pauses activity measurement and opens the paused menu screen.
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[RESUME] |
Resumes timing. |
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[SAVE] |
Saves the data and ends the measurement. |
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[DISCARD] |
Ends the measurement without saving the data. |
This displays the activity measurement result.
You can use (A) and (D) to scroll through summary screens.
The display returns to the current time after a preset amount of time or when (E) is pressed.
If a measurement operation is terminated without saving the data, the display returns to the selected activity screen.
To measure lap times
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This starts activity measurement.
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Press (E).
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Press (C) to pause activity measurement.
Each press of (E) displays the elapsed time of the current section (lap time) to appear.
Note
In the case of POOL SWIMMING, lap measurement cannot be performed using the above operation.
Before Using Pool Swimming (POOL SWIMMING)
You need to configure the settings before using the POOL SWIMMING activity.
Specify the length of the pool to be used
The pool length you specify is used to calculate the distance swum each time you perform a turn, which is interpreted as a lap.
After you stop swimming, a lap will be obtained after about six seconds.
Specify the arm where you wear the watch
This is necessary to detect the number of strokes and other data.
Using the Timer for Interval Training
Overview
Multiple timers can be used for the timing of consecutive segments of an activity (interval timers). You can use an interval timer to control how much time you spend doing push-ups, squats, or other exercises that make up a fitness workout.
For example, you could configure an interval timer as shown below and have intervals 
through 
automatically repeat ten times.
Timer Settings
[TIMER1]: 30 seconds
[TIMER2]: 20 seconds
[TIMER3]: 30 seconds
[TIMER4]: 25 seconds
Sets: 10
Interval Training Workout
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Push-ups: 30 seconds
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Rest: 20 seconds
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Squats: 30 seconds
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Rest: 25 seconds
Note
The interval timer can repeat up to five timers up to ten times (auto repeat timer).
For information about configuring interval timer settings, see the information below.
Timing with Interval Timers
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Display the current time screen.
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Press (C).
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Use (A) and (D) to select [INTERVAL TIMER].
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Press (C).
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Press (C) to start the timer countdown.
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Press any button to stop the sound and/or vibration operation.
This enters the Activity Mode.
This displays the measurement operation ready screen.
A 10-second sound or vibration alert notifies you when the interval timer operation is complete.
This displays the summary (measurement result) screen.
The watch will automatically store measurement data and display the summary (measurement result) screen if you do not perform any operation during the 10 seconds that an interval timer end notification operation is being performed.
Note
Interval timers count down the final five seconds with sound/vibration.
Holding down (E) for at least one second while a timer operation is in progress stops the current timer and starts measurement with the next timer.
Pausing and Resetting the Timer
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While a timer operation is in progress, press (C).
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Use (A) and (D) to select what to do with the interval training data measured by the timer.
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Press (C).
This pauses the time operation. After a few seconds, the pause menu screen appears.
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[RESUME] |
Resumes the timer operation. |
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[SAVE] |
Saves the data and ends the timer operation. |
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[DISCARD] |
Resets the timer. |
If you selected [SAVE], your interval training results appear on the display.
You can use (A) and (D) to switch summary screens.
Press (E) to return to the current time screen.
Starting Heart-rate Training
With heart-rate training, you measure your heart rate and then use the resulting value as a benchmark for training. You can monitor your heart rate levels and keep your exercise intensity in line with your training goals, which contributes to more efficient training, improved cardiopulmonary function, and better health.
Heart Rate Zone (HR zones)
Powered by Polar
To specify a target heart rate zone
Specify a target heart rate zone that matches your training objectives.
The range from 50% to 100% of your maximum heart rate is divided into five heart rate zones. You can easily control the intensity of your training by keeping your heart rate within a particular zone. Each heart rate zone has a main effect, and understanding these effects can enhance the effectiveness of your training.
Zone 1 (50 to 60% of maximum heart rate): Very light training
Zone 1 training improves overall health and helps you recover from more strenuous training.
You can continue training in this zone for long periods.
Zone 2 (60 to 70% of maximum heart rate): Light training
Zone 2 training increases general stamina. It uses fat as an energy source, improving the body’s ability to burn fat.
You can continue training comfortably in this zone for long periods.
Zone 3 (70 to 80% of maximum heart rate): Moderate training
Zone 3 training improves aerobic fitness. It causes lactic acid to begin to accumulate in the bloodstream, but the body can reuse the lactic acid for energy, so it does not affect performance.
Since Zone 3 training requires deeper breathing, you will feel the need for a moderate amount of effort.
Zone 4 (80 to 90% of maximum heart rate): Hard training
Zone 4 training improves speed endurance and enhances the ability of the body to use protein (sugar) for energy. In addition, Zone 4 training allows you to tolerate high levels of lactic acid in the blood.
Zone 4 training results in muscle fatigue and rough breathing.
Zone 5 (90 to 100% of maximum heart rate): Very hard training
Zone 5 training improves maximum performance. Large amounts of lactic acid are accumulated, so long-term training is not possible.
Zone 5 training results in labored breathing and muscle fatigue.
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Configure CASIO WATCHES phone app settings so the heart rate measurement screen is displayed as an activity measurement screen.
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Display the current time screen.
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Press (C).
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Use (A) and (D) to select an activity.
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Press (C).
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Use (A) and (D) to select the heart rate measurement screen.
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Hold down (A) for at least two seconds.
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Use (A) and (D) to move the pointer to [HR TARGET ZONE].
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Press (C).
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Use (A) and (D) to move the pointer to the heart rate zone you want to specify as your target.
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Press (C) to complete the setting operation.
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Press (E) to exit the setting screen.
This enters the Activity Mode.
Example:
Heart rate training is not available for POOL SWIMMING and OPEN WATER SWIMMING.
This displays the GPS signal receiving screen or returns to the activity measurement operation ready screen.
This displays the HEART RATE (heart rate measurement) setting screen.
After the setting operation is complete, a check mark appears for a few seconds, and then the HEART RATE (heart rate measurement) function setting screen re-appears.
To set up the heart rate zone alert
If you engage in heart-rate training while the heart rate zone alert is enabled, the watch will perform a sound and/or vibration operation to let you know when your current heart rate is outside your target zone. If you do not re-enter the target zone after the alert, an out-of-zone notification operation will be performed at one-minute intervals.
Heart rate zone alert performs notification only while the heart rate measurement screen is displayed.
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Configure CASIO WATCHES phone app settings so the heart rate measurement screen is displayed as an activity measurement screen.
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Display the current time screen.
-
Press (C).
-
Use (A) and (D) to select an activity.
-
Press (C).
-
Use (A) and (D) to select the heart rate measurement screen.
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Hold down (A) for at least two seconds.
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Use (A) and (D) to move the pointer to [HR ZONE ALERT].
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Press (C).
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Use (A) and (D) to move the pointer to [ON] (enabled) or [OFF] (disabled).
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Press (C) to complete the setting operation.
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Press (E) to exit the setting screen.
This enters the Activity Mode.
Example:
Heart rate training is not available for POOL SWIMMING and OPEN WATER SWIMMING.
This displays the GPS signal receiving screen or returns to the activity measurement operation ready screen.
This displays the HEART RATE (heart rate measurement) setting screen.
After the setting operation is complete, a check mark appears for a few seconds, and then the HEART RATE (heart rate measurement) function setting screen re-appears.
Activity Measurement Precautions
After using an activity function, use the charging cable to charge the watch.
Activity measurement is not possible while the battery indicator shows 
or lower. Charging before performing an activity measurement is recommended.
If [MEMORY FULL] appears on the display while an activity measurement operation is in progress, the measurement operation stops.
Measurement also stops automatically whenever a single activity measurement operation exceeds 80 hours.
You may not be able to save measurement results if the remaining activity log capacity is low. If this happens, delete log data you no longer need to make room for more data.
For information about the summary (Measurement Result) screen that appears after an activity measurement operation is complete, see the information below.
Activities that use GPS cannot be selected while Airplane Mode is turned on.