Casio STR-400 User Manual

Timekeeping Mode

Setting the Time and Date

1. Press the 'A' button in Timekeeping Mode. The seconds display will flash.
2. Press the 'C' button to cycle through the items to be set: Seconds -> Hours -> Minutes -> 12/24 Hour Format -> Year -> Month -> Day -> Seconds.
3. If you are correcting the seconds (seconds display flashing), press the 'E' button to reset the seconds to 00. If you press the 'E' button when the seconds count is between 30 and 59, the seconds will reset to 00 and 1 will be added to the minutes. If the seconds count is between 00 and 29, the minutes will not change.
4. To change minutes, etc., use the 'E' button to increase or the 'B' button to decrease the values.
5. Press the 'E' button to switch between 12-hour and 24-hour formats. The 'P' indicator appears for PM when the 12-hour format is selected.

Holding down a button allows you to change values at a faster rate.

The day of the week is set automatically according to the date.

The date can be set from January 1, 2000, to December 31, 2049.

6. After setting the date and time, press the 'A' button to return to Timekeeping Mode.
7. If you do not press any buttons for a while, the watch will automatically return to Timekeeping Mode.

Vibration Alarm:

• You can use the vibration alarm instead of the regular tone alarm.
• To turn the vibration alarm on or off, press and hold the 'D' button for 2 seconds in Timekeeping Mode.
• When the vibration alarm is on, the 'VIB' indicator appears on the display.
• When the vibration alarm is on, all tone alarms are automatically turned off.

Backlight:

• In any mode, press the 'L' button to turn on the backlight.
• The backlight of these watches uses electroluminescent (EL) elements, whose power decreases after prolonged use.
• The watch emits an audible signal while the backlight is on. This is due to the vibration of the backlight elements and does not indicate a malfunction.
• The backlight is difficult to see if direct sunlight is shining on the watch.
• Frequent use of the backlight shortens battery life.

Auto Backlight:

• You can turn the auto backlight function on or off by pressing and holding the 'L' button for 2 seconds in Timekeeping Mode.
• The auto backlight activates automatically whenever your hand is tilted at an angle of 40 degrees relative to the horizontal.
• Do not use the auto backlight function when light could be harmful or distracting. For example, when riding a motorcycle or bicycle.

Personal Data Input Mode

In this mode, you must enter your personal data (weight and stride length) for calculations in Exercise Mode.

Entering Personal Data:

Try to enter data as accurately as possible for more precise calculations.

1. In Exercise Mode, press and hold the 'A' button.
2. Use the 'C' button to cycle through the data items: Time/Calories/Distance/Step Count -> Weight ('WEIGHT') -> Stride Length ('STRIDE').
3. Use the 'E' button to increase or the 'B' button to decrease the values. Holding down a button allows you to change values at a faster rate.

Stride length can be set from 40 to 160 cm ('CM') in 2 cm increments. The distance traveled will be measured in kilometers ('KM').

Stride length can also be set from 14 to 76 inches ('IN') in 1-inch increments. The distance traveled will be measured in miles ('MI').

Weight can be set from 30 to 150 kg ('KG') in 1 kg increments, or from 66 to 330 pounds ('Lb') in 2-pound increments.

4. After completing data entry, press the 'A' button to save your personal data.

If you do not press any buttons for a while, the watch will automatically return to Exercise Mode.

Calculating Stride Length:

• You can calculate your stride length for walking or running over a specific distance by dividing the distance by the number of steps.
• For example, 372 steps are needed to cover a distance of 300 meters: 300 meters / 372 steps = 0.806 meters (approximately 80 cm).
• Or, 372 steps are needed to cover a distance of 330 yards: 330 yards / 372 steps * 36 inches/yard = 31.94 inches (approximately 32 inches).

Setting Time/Calories/Distance/Step Count:

Along with personal data, you can also set desired Time ('TIME'), Calories ('CAL'), Distance ('DIST'), or Step Count ('STEP'). When the desired value is reached, an alarm or vibration will sound.

1. In Personal Data Input Mode, press the button to select the values you want to set, in the following sequence: Time -> Calories -> Distance -> Step Count.
2. Press and hold the 'A' button.
3. You can also use the 'C' button to switch to personal data settings.
4. Note: You can only set one desired value at a time. The other values will show '- -'.
5. Use the 'E' button to increase or the 'B' button to decrease the values.

You can set the time from 0 to 500 minutes ('MIN') in 10-minute increments. The default setting is 60 minutes.

You can set calories from 0 to 2,000.00 kilocalories ('Kcal') in 50 kilocalorie increments.

You can set the distance from 0 to 50.00 kilometers ('KM') in 0.50 km increments, or from 0 to 50.0 miles ('MI') in 1.0 mile increments.

You can set the step count from 0 to 50,000 steps in 500-step increments.

4. After completing the settings, press the 'A' button.

Exercise Mode

After entering personal data and enabling the 15-second tone alarm, the watch can calculate calorie consumption, distance traveled, step count, and workout time in Exercise Mode.

All Exercise Mode data is automatically saved in the watch's memory. The watch resets to zero at 00:00 each day.

• Time measurement is possible from 0 to 20 hours in 1-second increments. Display data updates every second.
• Calorie consumption measurement is possible from 0 to 9,999.99 kilocalories in 0.01 kilocalorie increments. Display data updates every 10 seconds.
• Distance measurement is possible from 0 to 99.99 kilometers in 0.01 km increments, or from 0 to 99.9 miles in 0.1 mile increments. Display data updates with each tone alarm.
• Step count measurement is possible from 0 to 999,999 steps in 1-step increments. Display data updates with each tone alarm.

Tone Alarm:

• The tone alarm will sound according to the value you have set.
• This alarm is used to help maintain a steady workout pace.
• Try to follow the tone alarm during your workout for more accurate pacing.
• The tone alarm will not sound if the vibration alarm is on.

Setting Tone Alarm Value:

1. In Exercise Mode, press the 'E' button.
2. Start walking. Press the 'E' button each time your foot touches the ground. After the seventh step, the watch will automatically calculate the average.

The 'ERR' indicator on the display means the calculated value is outside the range of 80 to 180 steps per minute.

3. The alarm will then sound for 15 seconds according to the calculated value. You can stop the alarm by pressing any button except 'E'.
4. After completing the calculation, press any button except 'E' and 'L'.

To test the alarm sound, press the 'A' button in Exercise Mode.

How to Use Exercise Mode:

1. In Exercise Mode, press the 'B' button to start measurements.
2. Press the 'B' button to stop measurements. Press the 'B' button again to resume measurements.
3. During measurement, press the 'D' button to view results in the following sequence: Time -> Calories -> Distance -> Step Count.
4. To reset Exercise Mode readings, press and hold the 'D' button until an alarm sounds. The 'CLR' indicator will appear on the display.

Logbook Mode

In this mode, you can view or delete saved Exercise Mode data.

There are several types of data saving in this mode:

• Daily records: One record of measurement results each day. Data is updated in the watch's memory at 00:00.
• Weekly records: One record of measurement results each week for 10 weeks. Data is updated in the watch's memory every Monday.
• Total records: A cumulative record of all measurements ('TOTAL'). Data is updated in the watch's memory at 00:00 each day.

When new data is saved, old data is automatically deleted.

Viewing Saved Data:

1. In Logbook Mode, press the 'E' and 'B' buttons to cycle through the data in the following sequence: Daily Records -> Weekly Records -> Total Records.
2. After selecting the type of saved records, press the 'D' button to view the data within each record in the following sequence: Date -> Time -> Calories -> Distance -> Step Count.

Deleting Saved Data:

To delete all saved Exercise Mode data, press and hold the 'A' button until an alarm sounds. The 'CLR' indicator will appear on the display.

Weekly Graph:

The weekly graph displays segments for each day of the week.

• In Timekeeping and Exercise Modes: Segments are filled for days when the set target value was achieved.
• In Logbook Mode: A segment for a day is filled if the target value was achieved. If the weekly saving option is selected, all days are filled if the target is met.
• In Tone Alarm Mode: A segment for a day is filled if an alarm is set for that day. If a daily alarm is set, all segments are filled.

The graph uses the following day indicators: MON - Monday, THU - Thursday, SUN - Sunday.

Goal Graph:

This graph consists of 10 elements, representing 10% of the set goal.

• In Timekeeping and Exercise Modes: Filled segments show the percentage of the goal achieved for the current day.
• In Logbook Mode: Filled segments show the percentage of the goal achieved on a specific day.

Tone Alarm Mode

You can set various daily tone alarms. The alarm will sound for 10 seconds at the set time.

If the hourly chime is enabled, a short tone will sound at the beginning of each hour.

Types of Tone Alarms: The type of tone alarm depends on the information set for the alarm.

Setting a Daily Alarm: Set the alarm hours and minutes. Set the day of the week to '- -'. This setting ensures the alarm sounds daily at the set time.

Setting an Alarm with a Date: Set the alarm date, hours, and minutes. This type of alarm sounds at the set time on a specific date.

Setting an Alarm:

1. In Tone Alarm Mode, press the 'D' button to select the alarm type in the following sequence: -1 -> -2 -> -3 -> -4 -> -5 -> :00 (hourly chime indicator).
2. After selecting the alarm type, press and hold the 'A' button. The hour digits will flash, as they are selected for setting. The alarm activates automatically at this point.
3. Press the 'C' button to cycle through the settings: Hours -> Minutes -> Day -> Hours.
4. Press the 'E' button to increase or the 'B' button to decrease the selected value. Holding down a button allows you to change values at a faster rate.

The format (12-hour or 24-hour) matches the format you selected for the current time.

When using the 12-hour format, be careful to set the correct time for AM or PM.

5. After completing the settings, press the 'A' button to return to Tone Alarm Mode.

Checking Alarm Sound: In Tone Alarm Mode, press the 'D' button to check the alarm sound.

Enabling/Disabling Alarms: 1. In Tone Alarm Mode, press the 'D' button to select the alarm type. 2. Press the 'B' button to turn the alarm or hourly chime on/off.

Stopwatch Mode

Stopwatch Mode allows you to record split times, intermediate results, and dual finishes.

The total measurement time range is limited to 23 hours, 59 minutes, and 59.99 seconds.

a) Measuring Split Times: B (Start) -> B (Stop) -> B (Lap/Split Reset) -> B (Stop) -> D (Reset)

b) Measuring Intermediate Results: B (Start) -> D (Intermediate Result) -> D (Resume) -> B (Stop) -> D (Reset)

c) Dual Finish: B (Start) -> D (Split. First Finisher) -> B (Second Finisher. First finisher's result on display) -> D (Cancel Split. Second finisher's result on display) -> D (Reset)