Casio 5639 Watch User Manual

Casio® 5639 Quick Reference Manual

MA2004-EA

© 2020 CASIO COMPUTER CO., LTD.

Congratulations upon your selection of this CASIO watch.

The Bluetooth® word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and any use of such marks by CASIO COMPUTER CO., LTD. is under license.

This product has a Mobile Link function that lets it communicate with a Bluetooth® capable phone to perform automatic time adjustment and other operations.

  • This product complies with or has received approval under radio laws in various countries and geographic areas. Use of this product in an area where it does not conform to or where it has not been approved under applicable radio laws may be punishable under local laws. For details, visit https://world.casio.com/ce/BLE/.
  • Use of this product inside of an aircraft is restricted by the aviation laws of each country. Be sure to obey instructions provided by flight personnel concerning use of devices such as this product.

Visit the website below for the operation manual (Operation Guide) of this watch.

https://world.casio.com/manual/wat/

Using the Watch

Charging

Remove the watch from your wrist and place it in a brightly lit area.

  • The watch may become hot when exposed to light for charging. Take care to avoid burn injury.
  • Avoid charging in locations where it is very hot.

Power Saving

  • 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 second hand to stop at 12 o’clock.
  • Leaving the watch in a dark location for about one week will cause all hands to stop.

Battery Alerts

  • Low BatterySecond hand jumps every two seconds (Low Battery Alert).
  • Dead BatteryAll hands stopped.

General Guide

  1. 24-hour hand: Current time
  2. Hour and minute hands: Current time
  3. Alarm status: ON, OFF
  4. Dual Time dial
  5. Day of the week: Su, ·, T, ·, T, ·, S
  6. Mobile phone connection standby: R
  7. Bluetooth connection: *
  8. Lap time achievement area(Stopwatch)
  9. Dual Time: DT
  10. Alarm: ALM

* Hold down B for at least two seconds to establish a Bluetooth connection with a phone.

Selecting a Mode

Setting the Time

  1. Pull the crown out to the second click.
    • This enables setting of the hour and minute.
  2. Rotate the crown to change the current hour and minute setting.
  3. Press A.
    • This enables the year 10’s digit setting.
  4. Rotate the crown to change the year 10’s digit setting.
  5. Press A.
    1. This enables the year 1’s digit setting.
  6. Rotate the crown to change the year 1’s digit setting.
  7. Press A.
    • This enables the month setting.
  8. Rotate the crown to change the month setting.
  9. Press A.
    • This enables the day setting.
  10. Rotate the crown to change the day setting.
  11. After the settings are the way you want, push the crown back in.

Changing the Alarm Time Setting

  1. Pull the crown out to the first click.
  2. Press A.
  3. Press B to toggle the alarm between on and off.
  4. Rotate the crown to move the hands to the time you want to set.
  5. After the setting is the way you want, push the crown back in.

Changing the Dual Time Setting

  1. Pull the crown out to the first click.
  2. Rotate the crown to move the hands to the time you want to set.
  3. After the setting is the way you want, push the crown back in.

Specifications

Accuracy at NormalTemperature: ±15 seconds per month average when time adjustment by communication with a phone is not possible.
Timekeeping: Hour, minute (hands move at 10-second intervals), second; date, day of the weekCalendar system: Full-auto calendar from 2000 to 2099Others: Dual time (hour, minute, 24-hour timekeeping)
Stopwatch: Measuring unit: 1 secondMeasuring capacity: 23:59’59” (24 hours)Measurement functions: Elapsed time, Flyback timing, Direct start
Alarm: Setting units: Hour, minuteBeeper: 10 seconds
Mobile LinkFunctions: Auto Time CorrectionTime setting adjusted automatically at preset time.One-touch Time CorrectionManual connection and time adjustmentPhone finderWatch operation sounds the alert sound of the mobile phone.World TimeCurrent time for approximately 300 cities selected for the watchHome Time/World Time swappingAuto summer time switchingAutomatic switching between standard time and summer timeAlarm SettingHand position correctionData Communication SpecificationsBluetooth®Frequency Band: 2400MHz-2480MHzMaximum Transmission: 0 dBm (1 mW)Communication range: 2 meters max. (depends on environment)
Other: Power Saving, Low Battery Alert
Power Supply: Solar panel and 1 rechargeable battery
Battery Operating Time: Approximately 5 monthsConditionsNot exposed to light under the conditions below.

  • Auto time adjustment: 4 times/day
  • Alarm: Once (10 seconds)/day
  • Power Saving: 6 hours/day

Specifications are subject to change without notice.

References

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