Casio 2886 Owner's Manual
MA0611-EC
Operation Guide 2886
Introduction
Thank you for purchasing this CASIO product. To ensure that it can provide you with the years of service for which it is designed, be sure to read this manual carefully and follow the instructions contained herein. Make sure you read the Safety Precautions before using this product for the first time.
Note that the measurement functions of this product are not intended for use in applications where special instruments are required. The readings produced by this product are reasonably accurate approximations only.
Safety Precautions
Symbols
This manual and the product itself use various symbols that are intended to ensure safe operation of the product, to prevent injury to you and others, and to protect against material damage and loss. The following explains the meanings the symbols.
Example Symbols
The 
symbol indicates a caution. The symbol to the left indicates an electric shock caution.
The
symbol indicates something you must not do. The symbol to the left indicates that you should not try to
disassemble something.
The 
symbol indicates something you must do. The symbol to the left indicates that you must unplug the power cord from the power outlet.
Danger! |
Disregarding information with this label creates |
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the risk of death or serious personal injury. |
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Disregarding information with this label could Warning! possibly create the risk of death or serious
personal injury.
Disregarding information with this label could Caution! possibly create the risk of personal injury or
material loss.
Warning!
Do not use this product while scuba diving (aqualung).
•This product is not a diving watch. Improper use of this product can lead to serious accident.
Built-in battery
Never try to remove the watch’s rechargeable (secondary) battery. Leave all built-in battery replacement operations up to your original retailer or authorized CASIO service center.
Whenever the watch’s built-in battery is removed from the watch, take care to ensure that it is not swallowed accidentally. Special care is required where young children are present.
Keep batteries out of the reach of small children. Should a battery ever be swallowed accidentally, contact a physician immediately.
AC Adaptor and Charger Unit
Should you ever notice any abnormality such as smoke, strange odor, or excessive heat being emitted by the AC adaptor or charger unit, immediately unplug the AC adaptor 
from the power outlet and contact your original retailer or 
authorized CASIO service center.
Do not allow long-term contact between your skin and the AC adaptor or charger unit while it is conducting electricity, or with the watch while it is being charged. Long term contact creates the risk of low-temperature burn injury.
Warning!
AC Adaptor and Charger Unit
Never allow water or foreign matter to get inside the AC adaptor or charger unit, and do not allow them to become wet. Should water or foreign matter get into the AC adaptor or charger unit, immediately turn off power, unplug the AC adaptor from the power outlet, and contact your original retailer or authorized CASIO service center.
Failure to observe the following points concerning the AC adaptor and charger unit creates the risk of fire and personal injury.
•Do not use or leave the AC adaptor or charger unit near a heater or any other source of heat.
•Do not use or leave the AC adaptor or charger unit in a bathroom, near a humidifier, or in any other location where it is exposed to splashing water or moisture.
•Never touch the AC adaptor or charger unit while your hands are wet.
•Never expose the AC adaptor or charger unit to flame or heat.
•Never try to take the AC adaptor or charger unit apart or modify it in any way.
•Never short AC adaptor or charger unit terminals through contact with needles, pins, or other metal objects.
•Take care not to drop the AC adaptor or charger unit or otherwise subject it to strong impact.
•To ensure safety during lightning storms, unplug the AC adaptor from the power outlet.
•Be sure to grasp the plug when unplugging the AC adaptor.
•Never use the watch, AC adaptor, or charger unit while it is covered by a blanket, etc.
•Keep the AC adaptor and charger unit out of the reach of small children.
•Be sure to unplug the AC adaptor from the power outlet before leaving on a trip or otherwise leaving it unattended for long periods.
Caution!
Caring for Your Watch
A dirty or rusty case or band can soil the sleeve of your clothing. Be sure to keep the case and band clean at all times. Rust tends to form easily after the watch is exposed to seawater and then left without cleaning.
Skin Irritation
Since the watch and the band come into direct contact with the skin, the following conditions may cause irritation of the skin.
•When a wearer is allergic to metal or leather
•When the watch or band is rusty dirty, sweaty, etc.
•When the wearer is in poor physical condition
•Tightening the band too tightly can cause you to sweat, and can make it hard for air to pass under the band, which can lead to skin irritation. Do not over-tighten the band.
•The bacterial and odor resistant band suppresses the formation of organisms and bacteria due to sweat, and related odors. It does not protect against skin rash.
•Should you ever notice any abnormality, immediately stop using the product and consult a physician.
Using the Auto Light
It is recommended that you turn off the Auto Light while driving or riding in a motor vehicle. Unintended illumination can distract the operator and create the risk of traffic accident.
Never try to take the watch apart!
Never try to take the watch apart. Doing so creates the risk of personal injury and malfunction of the watch.
1
Operation Guide 2886
Caution!
Use of the Product
To avoid unexpected accidents, always check around you to ensure you are in a safe place before looking at the display of the watch. Looking at the watch while marathoning or jogging on the open road, while riding a bicycle, or while operating a motor vehicle can lead to accidents. Take care to avoid running into others.
Take care to avoid breaking your fingernails when fastening and unfastening the band. Particular care is required by people with long fingernails.
To avoid skin irritation due to unexpected injury or allergy, do not wear the watch while sleeping.
When picking up or otherwise coming into contact with a child, remove the watch from your wrist to avoid injury to the child or causing irritation of the child’s skin.
Keep backup copies of data!
Make sure you always keep separate written copies of important data to protect against its loss. Memory contents can be deleted by malfunction repair, etc.
Data Reliability Precaution
•The Global Positioning System (GPS) is maintained by the United States government. Its operation, precision and other variables are subject to change.
•GPS precision is affected by the relative positions of the
satellites being tracked and of the watch.
AC Adaptor and Charger Unit
Use only the AC adaptor and charger unit that are designed specifically for use with this product. Use of another type of AC adaptor or charger unit can cause the built-in battery to overheat and ignite, creating the risk of explosion.
Use only an AC adaptor whose markings show it is rated for the power supply in the area where you are using it.
Basics
■ General Guide
The font used in the screen shots shown in this manual was selected for ease of reading. Because of this, the appearance of the screen shots may be slightly different from the actual display of the watch.
● Watch
Button
Button
Charger Terminal
Button
Button
Button
GPS Positioning
To use GPS for auto time calibration or for stopwatch measurements, you need to start a GPS measurement operation before entering the Timekeeping Mode or Stopwatch Mode.
1.In the Timekeeping Mode, hold down the E button for about one second to start GPS measurement.
2.Perform the Timekeeping Mode or Stopwatch Mode operation you want.
3.To stop GPS measurement, return to the Timekeeping Mode and
press the E button again.
•For details about GPS, see “GPS”.
•GPS measurement has two modes: NORMAL and LOW POWER. LOW POWER uses less power than when NORMAL is selected. For more information, see “Selecting the GPS Measurement Mode”.
Current Time and Date Screen (Timekeeping Mode)
Month
Year Day
Day of the Week |
Minute |
PM Indicator (A for AM)
Hour Second
If your watch has a protective sticker on its glass, remove the sticker.
● Charger Unit
Tray
Charge Switch
Release Button
Battery Compartment
Lock |
Charge Lamp |
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(LED) |
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AC Adaptor Terminal |
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Battery Cover |
■ Auto Display Off
Auto Display Off conserves built-in battery power by turning off the display automatically when you are not using the watch.
Auto Display Off Triggers
•No watch button operation for 60 minutes
•No movement of the watch for 60 minutes
Movement of the watch is detected by the angle sensor of the EL backlight.
To recover from Auto Display Off
•Press any button.
•Moving the watch does not recover from Auto Display Off.
■ Turning the Operation Tone On and Off
You can turn off the operation tone that sounds when you change from one mode to another or when you perform other operations. When any screen besides a setting screen (one with a flashing setting) is on the display, hold down the C button for about one second.
• This will cause the operation tone to sound, and toggle the operation tone on or off.
•The M indicator is on the display while the operation tone is off.
•Holding down the C button also changes the watch’s current mode.
•The alarm, hourly time signal, and timer time up beeper continue to sound, even when the operation tone is turned off.
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Operation Guide 2886
GPS
The letters “GPS” stand for “Global Positioning System”, which was developed and is operated by the United States Department of Defense.
A GPS device picks up radio signals from three or more of the system’s satellites orbiting about 21,000 kilometers above the Earth, and then applies the principles of triangulation to calculate a current position based on the distance between each satellite and the GPS device, and based on each satellite’s orbit.
Each satellite constantly transmits time information required for GPS measurement, a one-second pulse (Universal Coordinated Time), the satellite’s orbit information (ephemeris data), information about the orbits of all the other satellites (almanac data), and other information.
Your watch analyzes the data it receives from the GPS satellites to determine your current location, and calculates the distance you have covered and your bearing.
● Important!
•The signals of the GPS system are controlled by the Tracking and Control Center (TACC) of the United States, and are subject to intentional precision degradation and signal termination at its discretion.
•This watch depends on the reception of radio waves from artificial satellites, so certain conditions can interfere with its operation.
•The following conditions can cause radio interference and make reception impossible.
● Among buildings or |
● Surrounded by |
● Inside a |
underground |
skyscrapers |
motor vehicle |
Under |
ground |
● In wooded areas |
● Near |
● When the watch is |
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high-voltage lines |
under your sleeve |
Modes
Press the C button to cycle between modes.
•The watch will return to the Timekeeping Mode automatically if you do not perform any button operation in the Guide Mode, Recall Mode, or Alarm Mode.
Timekeeping Mode
Use the mode to view the current time and date.
Day of the Week
Month
Year Day
Button |
Button |
PM Indicator |
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(A for AM) |
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Button |
Button |
Button |
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Hour : Minute Second |
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Alarm Mode |
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Stopwatch Mode |
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Use this mode to set the |
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This mode measures |
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alarm time, and to turn the |
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distance, speed, and elapsed |
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alarm and hourly time signal |
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time. |
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on or off. |
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Mode Name |
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Mode Name |
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If the date is greater than ± 512 weeks off when performing a GPS measurement, following auto time correction the date will become ± 1024 weeks from the actual date. In this case, refer to “Configuring the Watch’s Basic Settings” and adjust the date.
■ GPS Auto Time Calibration by GPS
When the watch performs a GPS measurement, it also receives time data and adjusts its time and date setting automatically.
•If you cannot receive a GPS signal for some reason, periodically adjust the time and date setting manually using the procedure.
To perform GPS auto time calibration
1.In the Timekeeping Mode, hold down the E button for about one second.
•This will start GPS measurement, which is indicated by a flashing GPS indicator (
).
•To stop GPS measurement, press the E button again.
•A GPS measurement operation normally takes one or two minutes, but can take as long as five minutes. The message “TIME OUT” will appear and measurement will stop if measurement is not possible.
•Summer time (DST) settings are not configured automatically. See “To configure basic settings” for more information.
SEARCH Screen
During Measurement
GPS Indicator
Level
No Measurement
Number of Satellites
In order to facilitate GPS reception, set the current date manually after you first purchase the watch.
•You also can speed up GPS reception by setting the month, day, and approximate current time manually. See “To configure basic settings” for information about manual time and date settings.
World Time Mode
This mode shows the current time in 141 cities in 38 time zones.
Mode Name
Timer Mode
This mode provides a countdown timer.
Mode Name
Guide Mode
This mode tells you the distance and direction from your current location (BASE POINT) to your destination (GOAL POINT).
Mode Name
Recall Mode
Use this mode to recall stopwatch records.
Mode Name
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Operation Guide 2886
■ Illumination
An EL (electro-luminescent) panel is used for display illumination.
To turn on illumination manually
1. In any mode, press the Dbutton.
•This will turn on illumination for about 1.5 seconds.
•Pressing the Dbutton turns on illumination regardless of whether Auto Light is on or off.
To turn Auto Light on or off
•Auto Light turns on illumination for about 1.5 seconds in all modes when you angle the watch towards your face.
1. In the Timekeeping Mode, hold down the D button for about one second to toggle Auto Light on (
displayed) or off (
not displayed).
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Auto Light |
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Positioning Your Arm Correctly |
On Indicator |
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With the watch on your |
Rotate your arm until the |
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wrist, position it parallel |
watch is angled at about |
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with the ground. |
40 degrees, so you can |
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read its face. |
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At least 40 degrees
•You should be wearing the watch on the outside of your wrist when using the auto light switch.
•Make sure that a line running from the left side (9 o’clock) to the right side (3 o’clock) of the watch is within 15 degrees parallel with the ground. The auto light switch may not operate properly if this angle is greater than 15 degrees.
● Illumination Precautions
•Illumination may be difficult to see under bright sunlight.
•Illumination will turn off automatically if you press any button while it is turned on.
•You may notice a slight sound from the watch while illumination is turned on. This is the sound of EL panel vibration and does not indicate malfunction.
● Auto Light Precautions
•Auto Light will remain enabled for about 60 minutes after it last turned on illumination. After that, it will turn off automatically in order to conserve built-in battery power.
•If you want to continue using auto light, hold down the D button for about one second again until the Auto Light on indicator reappears. Note, however, that frequent use of Auto Light can run down the builtin battery.
•Illumination may not turn on immediately when you angle the watch towards your face. This does not indicate malfunction.
•Illumination remains on for about 1.5 seconds only, even if you leave the watch angled towards your face.
•Illumination may turn on unintentionally when you wear the watch on the inside of your wrist, when you shake your arm, or when you raise your arm. Be sure to turn off Auto Light whenever you do not need illumination.
•Keep Auto Light turned off whenever you are wearing the watch on the inside of your wrist.
•Electro-static charge and magnetism can interfere with Auto Light operation and even make operation impossible. If this happens, lower your arm to the starting position and then raise it again. If you still have trouble with illumination, try lowering your arm down to your side and then raise it to your face for reading.
You may hear a faint rattling sound when you move the watch around. This sound is caused by the movement of a metal bulb that controls Auto Light operation, and does not indicate malfunction.
Charging the Built-in battery
Use one of the following procedures to charge the built-in battery before using the watch for the first time or whenever the “LOW BATTERY” message appears. 
To use the AC adaptor for charging
Connect the plug of the AC adaptor to the charger unit’s AC adaptor terminal.
• Keep charger unit contacts clean by
wiping them with a clean cloth.
Plug Open the cover,
and then insert the plug.
To use a battery for charging
•Note that charging from a battery is not possible while the AC adaptor is connected to the charger unit’s AC adaptor terminal.
Use a 006P Type (9V) alkaline battery (6LR61) for charging.
1.Release the lock and then open the battery cover.
Slide.
Release lock (down).
2. Attach the battery.
Attach.
Take care so the |
Pull out. |
and terminals are |
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connected correctly. |
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3. Insert the battery into the |
4. Close the battery cover and lock |
battery compartment. |
it. |
Insert. |
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Lock (up). |
Battery Compartment |
Slide. |
To charge the watch
1.Place the watch onto the tray of the charger unit.
•Make sure the watch is inserted securely into the tray.
3. Turn on the charge switch.
LED on
ON
5.Remove the watch from the charger unit.
•Pressing the release button will cause the tray to return to its original position with considerable force. Take care that you do not injure your finger on the tray.
Remove.
Press the release 
button.
2.Secure the watch in the charger unit.
Snap
Slide. 
4.When the LED goes out, turn off the charge switch.
LED off
OFF
Important!
•Note that the charger unit becomes rather unstable (because it is top-heavy) when the watch is mounted on it.
•If the LED starts to flash while the watch is on the charger unit, turn off the charge switch and then turn it back on again.
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Operation Guide 2886
● Time Required for Charging
The watch takes about three hours to achieve a full charge from full discharge.
● Number of Alkaline Battery (6LR61) Charges
You can charge the watch fully about five times with each alkaline battery.
•Do not use a manganese battery for charging.
•If the LED flashes while the charger unit switch is turned on after you remove the watch from the charger unit, it means that there is still enough alkaline battery power left for charging.
•If the LED does not flash even though the charger unit switch is on, it could mean that the alkaline battery is dead. Charge again using a new alkaline battery.
● Approximate Continuous Built-in battery Operating Time
•Timekeeping Only: 7 to 11 days
•Continuous GPS Measurement: NORMAL: 2.0 hours
LOW POWER: 4.3 hours
•Actual built-in battery operating time depends on operating conditions.
•Repeated charging and discharging shortens built-in battery operating time.
● Built-in battery Level
A low battery indicator appears on the display to warn you that built-in battery power is low. When built-in battery power becomes very low, the low battery indicator will start to flash and the message “LOW BATTERY” will appear on the display.
•Low Battery Indicator On: Measurement data (GPS, stopwatch) is saved as it is measured.
•Low Battery Indicator Flashing: Stopwatch is forced to reset to all zeroes. All measurement data (GPS, stopwatch) up to that point is saved.
•Depending on conditions, the following functions may not operate correctly or may become disabled while the low battery indicator is displayed or flashing: GPS reception, stopwatch operations, Recall Mode data delete, Guide Mode destination editing and delete, contrast adjustment.
● Built-in battery Life
Built-in battery capacity becomes 70% of normal after 300 charge/ discharge cycles. Actual built-in battery life depends on operating conditions.
● Handling
•Be sure to keep the charger contacts of the watch clean at all times. Dirt can cause poor contact. Before charging, wipe the contacts with a dry cloth, tissue paper, etc. Never allow needles, pins, or other metal objects to touch the contacts.
•Built-in battery performance deteriorates under low temperatures, which can cause the “LOW BATTERY” message to appear more quickly than normal.
•The allowable temperature range of the charger unit during charging is 5°C to 35°C (41°F to 95°F).
•Use only the AC adaptor that comes with the charger unit. Never try to use any other type of AC adaptor.
•Never plug the AC adaptor into any power supply that is outside the power supply voltage range marked on the adaptor. Doing so creates the risk of fire, malfunction, and electric shock.
•The LED will flash if an error occurs during charging. If this happens, turn the charger unit’s charge switch off and then back on again. If this does not correct the problem, contact your original retailer or authorized CASIO service center.
•Take care to avoid cutting or damaging of the AC adaptor’s power cord. Do not place any heavy object on the cord or expose it to heat. A damaged power cord creates the risk of fire, accident, and electric shock.
•Never plug in or unplug the AC adaptor while your hands are wet. Doing so creates the risk of electric shock.
•Do not plug the AC power cord into an extension cord shared by other devices. Doing so creates the risk of fire, malfunction, and electric shock.
•Should the AC adaptor’s power cord become damaged (internal wires exposed, shorted, etc.), request repair from your original retailer or authorized CASIO service center. Using a damaged power cord creates the risk of fire, malfunction, and electric shock.
•The AC adaptor will become warm to the touch during charging. This is normal and does not indicate malfunction.
•Always unplug the AC adaptor from the power outlet when you are not using it.
•Never cover the AC adaptor with a tablecloth, rug, blanket, cushion, or similar item while charging. Internal heat build-up creates the risk of fire.
Using the Stopwatch Mode
To enter the Stopwatch Mode, press the Cbutton once in the Timekeeping Mode.
About
2 seconds
In order to perform a stopwatch measurement that includes GPS measurement, you need to start the GPS measurement (by holding down the E button for about one second) before entering the Stopwatch Mode.
•The watch will beep and “FIX” will appear on the display to indicate that GPS measurement has started.
•The GPS indicator (
) flashes on the display while GPS measurement is in progress.
●Main Functions
Measurement
Time Measurement Unit: 1/100 second
Time Measurement Range: 23:59'59.99" (24 hours)
•Elapsed time returns to zero automatically and timing continues from there when the maximum limit is reached.
Distance Measurement Unit: kilometers or miles
•See “To configure basic settings” for information about selecting the distance unit.
Distance Measurement Range: 999.99 km (621.36 miles)
Speed Measurement Range: 0.0 km/h to 40.0 km/h (0.0 mph to 24.9 mph)
Measurement Data: Lap time, split time, target time differential, target distance differential, distance covered, speed, pace
•GPS measurement is used to measure target time differential, target distance differential, distance covered, speed, and pace.
Memory Data
Number of Records: 50 (up to 100 laps per record)
• Laps are counted from 0 to 999.
Record Items: Lap time, split time, running time, distance covered, average pace, distance within a lap, pace within a lap
•GPS measurement is used to measure distance covered, average pace, distance within a lap, and pace within a lap.
● Memory
Stopwatch measurement data is saved temporarily in watch memory, and then moved to flash memory when you reset the watch to all zeroes. The message “MEMORY FULL” will appear on the display if you try to save data when there are already 50 records stored in flash memory. In this case, you will need to delete data you no longer need in order to store more data.
•See “Deleting Records” for information about deleting data from memory.
● Stopwatch Time Displays
During the first hour of a stopwatch time measurement, the display shows minute, second, and 1/100-second values. After the end of the first hour is reached, the display switches to hour, minute, and second values.
Example: Lap time display
First hour |
Subsequent Hours |
Lap Time
(minutes, seconds, 1/100 second)
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Elapsed Time |
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Elapsed Time |
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(minutes, seconds, 1/100 second) |
(hours, minutes, seconds) |
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