A159 - Wristwatch CASIO - Free user manual and instructions
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| Type of product | Digital wristwatch |
| Brand | Casio |
| Model | A159 |
| Display type | Digital LCD |
| Dimensions | Approx. 37.8 x 32.4 x 9.6 mm |
| Case material | Resin |
| Band material | Resin |
| Weight | Approx. 50 g |
| Power source | One CR2016 battery |
| Battery life | Approx. 7 years |
| Accuracy | ±30 seconds per month |
| Water resistance | Water resistant (not suitable for swimming or diving) |
| Stopwatch | 1/100 second - 1 hour; elapsed time, split time, 1st-2nd place times |
| Alarm | Daily alarm with snooze (5-minute repeat, up to 3 times) |
| Hourly time signal | Yes |
| Auto-calendar | Pre-programmed until the year 2099 |
| LED backlight | Yes, with afterglow |
| Maintenance | Wipe with a soft cloth; avoid water and impact |
| Safety | Keep out of reach of small children (small parts); lithium battery hazard |
| Spare parts and repairability | Battery replacement by authorized service; bands available |
Frequently Asked Questions - A159 CASIO
How do I set the time on my Casio A159?
Press and hold the ADJUST button (top left) until the seconds flash. Then press MODE (bottom left) to cycle through settings (seconds, time, date, etc.). Use START/STOP (top right) and SPLIT/RESET (bottom right) to adjust values. Press ADJUST to exit.
How do I set the alarm?
Press MODE until the alarm screen appears (ALM indicator). Press and hold ADJUST until the hour digits flash. Use START/STOP and SPLIT/RESET to set hour and minutes. Press ADJUST to exit. Toggle alarm on/off by pressing START/STOP in alarm mode.
How to use the stopwatch?
Press MODE repeatedly until the stopwatch screen (ST). Press START/STOP to start/stop timing. Press SPLIT/RESET while running to record a split. Press SPLIT/RESET after stopping to reset.
How do I replace the battery?
The watch uses a CR2016 lithium battery. To replace, carefully open the back cover using a screwdriver (case back may be held by screws or snap). Insert the new battery with the positive (+) side up. Close the back cover securely and test functions. For warranty, visit an authorized Casio service.
Is the Casio A159 water resistant?
Yes, it is water resistant but not suitable for swimming, diving, or showering. Avoid pressing buttons while submerged. Wipe dry after contact with water.
How do I turn on the backlight?
Press the LIGHT button (bottom left or top left depending on model) to illuminate the display for a few seconds. The backlight has an afterglow.
How to turn off the hourly time signal?
Press MODE until the alarm screen appears. Press SPLIT/RESET to cycle through the alarm and hourly signal (SIG indicator). When the hourly signal is displayed, press START/STOP to toggle it on or off.
What do I do if the watch is not functioning correctly?
Press and hold the ADJUST and MODE buttons simultaneously for about 3 seconds to reset the watch. This clears all settings. Re-enter time and alarm settings after reset.
How accurate is the Casio A159?
The accuracy is ±30 seconds per month at normal temperatures (0°C to 40°C). Extreme temperatures may affect accuracy.
How should I clean and maintain my watch?
Clean with a soft cloth slightly dampened with water. Avoid using solvents, alcohol, or abrasive cleaners. Keep away from magnets, extreme temperatures, and shocks.
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USER MANUAL A159 CASIO
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Product information
Brand : CASIO
Model : A159
Category : Wristwatch