This classic Casio digital watch features a light, stopwatch, daily alarm and water resistance. It...This classic Casio digital watch features a light, stopwatch, daily alarm and water resistance. It is a modern (yet classic) Casio watch with unisex styling and a larger and fashionable case size offering a host of great features. Long-life, pre-fitted battery (uses popular and low cost CR2016 lithium coin). Supplied already running - A reassuring 2 year manufacturers warranty. Lots of features including stopwatch, daily alarm and an automatic calendar. Easy to read display: with a built-in LED light to illuminate the watch face from side and under low light conditions, You can even choose a 12 or 24 hour format for time display. Comfortable, lightweight watch, amazing value too with fully adjustable and durable resin strap to fit all wrist sizes. Resistant to minor splashing. Case Dimensions: Approx. H3.8 x W3.3 x D.8.5cm A REALLY superb value watch for everyday use and much more. Super accurate timekeeping for men, women, children & teenagers. Perfect for holidays, work.
CASIO F-91W-1YER DIGITAL CASUAL WRISTWATCH W/ BLACK RESIN STRAP STOPWATCH ALARM£3.38 delivery£10.80Visit shop →
Product Information
Full details
The Casio F-91W-1YER is a classic digital watch suitable for anyone needing a reliable and affordable timepiece. Its key benefit is its ease of use, durability, and a wide array of features including a stopwatch and alarm. However, it's resistant to minor splashing only, so it's not suitable for swimming. This guide provides detailed instructions on setup, usage, and care to help you get the most out of your Casio F-91W-1YER.
All features
Series
Collection
Model Part Number
F-91W-1YER
Brand
CASIO
Extended Product Information
FAQs
How do I change the battery?
The watch uses a CR2016 battery. It's recommended to have a professional replace the battery to avoid damaging the watch.
Is the watch waterproof?
The watch is water-resistant to minor splashing only. Avoid submerging it in water.
How do I use the light?
Press the Light button (usually the upper left button) to illuminate the watch face.
How do I set the date?
Press the Mode button until the time display appears. Hold the Adjust button until the settings begin to blink. Use the Mode button to cycle through the options and the Adjust button to change the values.
What is the warranty?
The watch comes with a 2-year manufacturer's warranty.
Can I adjust the strap?
Yes, the resin strap is adjustable to fit various wrist sizes.
How accurate is the timekeeping?
The Casio F-91W-1YER provides super accurate timekeeping.
Troubleshooting
Watch display is dim or unreadable.
Replace the battery. Ensure you are viewing the watch in an appropriate lighting environment.
Watch buttons are unresponsive.
Check if the buttons are physically stuck or blocked. If not, the battery may need replacing.
Alarm does not sound.
Ensure the alarm is turned on (check the indicator on the display) and that the time is set correctly.
Pros and Cons
Pros
Affordable price point
Durable and reliable
Easy to read display
Multiple functions (stopwatch, alarm, calendar)
Comfortable to wear
Cons
Water resistance limited to minor splashing
Resin strap may require adjustment for a perfect fit
Display may be difficult to read in direct sunlight
Setup, Compatibility & Care
Setting the Time: Press the Mode button until you see the time. Hold the Adjust button until the seconds start to blink. Use the Mode and Adjust buttons to set the time, date, and year.
Using the Stopwatch: Press the Mode button until you see the stopwatch. Press the Start/Stop button to start and stop the timer. Press the Reset button to reset the stopwatch.
Setting the Alarm: Press the Mode button until you see the alarm. Hold the Adjust button until the hour digits flash. Use the Mode and Adjust buttons to set the alarm time. Press Adjust to confirm. Press the Start/Stop button to toggle the alarm on/off.
Compatibility: The watch is compatible with all wrist sizes due to its adjustable strap.
Care: Clean the watch with a soft, damp cloth. Avoid harsh chemicals or solvents. Do not expose the watch to extreme temperatures or prolonged sunlight.