MA1904-EA
© 2019 CASIO COMPUTER CO., LTD.
Quick Reference Manual 5604
Congratulations upon your selection o
Bluetooth® is a registered trademark or trademark of Bluetooth SIG, Inc. of the United
States.
This product has a Mobile Link function that lets it communicate with a Bluetooth®
capable phone to perform automatic time adjustment and other operations.
x 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/.
x 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.
f this CASIO watch.
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.
x The watch may become hot when exposed to light for charging. Take care to avoid
burn injury.
x Avoid charging in locations where it is very hot.
Power Saving
x Leaving the watch in a dark location for about one hour between the hours of 10p.m.
and 6a.m. will cause the second hand to stop at 12o’clock.
x Leaving the watch in a dark location for about one week will cause all hands to stop.
Battery Alerts
x Low Battery
Second hand jumps every two seconds (Low Battery Alert).
x Dead Battery
All hands stopped.
General Guide
16
2
3
4
5
30
Selecting a Mode
Calendar Mode Stopwatch Mode
Setting the Time
1. Pull the crown out to the second click.
x This enables setting of the hour and minute.
2. Rotate the crown to change the current hour and minute setting.
3. Press A.
x This enables the year 10’s digit setting.
4. Rotate the crown to change the year 10’s digit setting.
Crown
Click 1
7
8
9
10
(Hold down at least two seconds.)
1. 24-hour hand: Current time
2. Hour and minute hands: Current time
3. Alarm status: ON, OFF
Click 2
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.
A
A
*
Year 10’s Digit Setting
00
10
20
90
80
70
40
50
60
5. Press A.
x This enables the year 1’s digit setting.
6. Rotate the crown to change the year 1’s digit setting.
7. Press A.
x This enables the month setting.
8. Rotate the crown to change the month setting.
9. Press A.
x 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.
Dual Time hour/minute
Year 1’s Digit Setting
9
8
7
Month Setting
9
8
7
Month Day
Alarm hour/minute
Hours (0 to 24)
Hours (0 to 24)
0
1
2
3
4
5
6
12
111
210
3
4
5
6
Specifications
Accuracy at Normal
Temperature:
Timekeeping: Hour, minute (hands move at 10-second intervals), second; date,
Stopwatch: Measuring unit: 1 second
Alarm: Setting units: Hour, minute
Mobile Link
Functions:
Other: Power Saving, Low Battery Alert
Power Supply: Solar panel and 1 rechargeable battery
Battery Operating
Time:
Specifications are subject to change without notice.
30
±
15 seconds per month average when time adjustment by
communication with a phone is not possible.
day of the week
Calendar system: Full-auto calendar from 2000 to 2099
Others: Dual time (hour, minute, 24-hour timekeeping)
Measuring capacity: 23:59'59" (24 hours)
Measurement functions: Elapsed time, Flyback timing, Direct start
Beeper: 10 seconds
Auto Time Correction
Time setting adjusted automatically at preset time.
One-touch Time Correction
Manual connection and time adjustment
Phone finder
Watch operation sounds the alert sound of the mobile phone.
World Time
Current time for approximately 300 cities selected for the watch
Home Time/World Time swapping
Auto summer time switching
Automatic switching between standard time and summer time
Alarm Setting
Hand position correction
Data Communication Specifications
®
Bluetooth
Frequency Band: 2400MHz-2480MHz
Maximum Transmission: 0 dBm (1 mW)
Communication range: 2 meters max. (depends on environment)
Approximately 5 months
Conditions
Not exposed to light under the conditions below.
x Auto time adjustment: 4 times/day
x Alarm: Once (10 seconds)/day
x Power Saving: 6 hours/day
1