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Casio Men's F-91WM-1BCF Classic Digital Display Quartz Black Watch
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Purchase options and add-ons
Product details
About this item
- Daily Alarm; Stopwatch; 7-Year Battery
- Water Resistant Only, not suitable for diving, swimming or showering/bathing. Submerging in water is not recommended.
- Quartz Movement
- Case Diameter: 35.5mm
- Not water resistant
Frequently bought together

Product details
- Batteries : 1 Lithium Metal batteries required. (included)
- Is discontinued by manufacturer : No
- Product Dimensions : 25.4 x 25.4 x 25.4 cm; 20.87 g
- Date First Available : May 18 2018
- Manufacturer : CASPQ
- Place of Business : Markham, ON L3R 3L3, CA
- ASIN : B07C9F8XLL
- Item model number : F-91WM-1BCF
- Country of origin : China
- Department : Mens
- 鶹 Rank: #137,679 in Clothing, Shoes & Accessories (See Top 100 in Clothing, Shoes & Accessories)
- #1,082 in Men's Wrist Watches
- Customer Reviews:
Product description
鶹.ca Product Description
Necessity is not the mother of invention, invention is the mother of necessity." These are the words of one of Casio's founders. The people who created Casio were determined to 'invent necessity'- to create products that met latent needs with groundbreaking capabilities no one had ever seen before. Ever since, Casio has been doing just that, bringing new discovery and delight to people around the world. This is Casio's way of building an even more prosperous, richly rewarding world.
From the Manufacturer
A tried and true style great for casual wear. With its daily alarm, hourly time signal and auto calendar, you'll never need to worry about missing an appointment again. Black and silver Casual Classic watch with a Resin Band.
From the manufacturer

Casio Values
"Necessity is not the mother of invention, invention is the mother of necessity." These are the words of one of Casio's founders. The people who created Casio were determined to 'invent necessity'- to create products that met latent needs with groundbreaking capabilities no one had ever seen before. Ever since, Casio has been doing just that, bringing new discovery and delight to people around the world. This is Casio's way of building an even more prosperous, richly rewarding world.
Key Features
30 Meter (100 Feet) Water Resistant
Suitable for everyday use. Will withstand accidental splashes but not suitable for swimming.
Daily Alarm
1/100 Second Stopwatch
Casio Accuracy and Reliability
Product specifications
Watch Information
Brand, Seller, or Collection Name | Casio |
---|---|
Model Number | F-91WM-1BCF |
Part Number | F-91WM-1BCF |
Model Year | 2020 |
Item Shape | Rectangular |
Dial window material type | Mineral |
Display Type | Digital |
Clasp Type | Buckle |
Case material | Plastic |
Case diameter | 35.5 millimeters |
Case Thickness | 8.38 millimeters |
Band Material | Resin |
Band size | Men's standard |
Band width | 19.25 millimeters |
Band Colour | Black |
Dial colour | Grey |
Bezel material | Plastic |
Bezel function | Stationary |
Calendar | Day-Date |
Special features | Second Hand, Water Resistant, Alarm |
Item weight | 21 grams |
Movement | Quartz |
Warranty type | Manufacturer |
Warranty | If this product is sold by 鶹, please review the manufacturer’s website for warranty information. If this product is sold by another party, please contact the seller directly for warranty information for this product. You may also be able to find warranty information on the manufacturer’s website. |
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Customer reviews
Customers say
Customers like the appearance, lightweight, and durability of the watch. They mention it's a classic, retro style, and really good for welders. Customers also appreciate the size. However, some customers have reported that the backlight is a small light in one corner.
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Customers like the appearance of the watch. They mention it's nice, easy to read, functional, and looks good on the right sized wrists. Some say it's a classic and retro style.
"...the 80's and it was omnipresent - everyone had one as it was cheap, not-ugly and did its job perfectly...." Read more
"Simple. Light and beautiful watch." Read more
"can’t be happier with is. nice, durable and small" Read more
"Good watch" Read more
Customers like the lightweight design of the watch. They mention it's super slim, thin, comfortable, durable, and cheap.
"...I don't have huge wrists so this was perfect. The watch is light weight and colors are true to the image - it's a dark matte grey." Read more
"Simple. Light and beautiful watch." Read more
"Inexpensive, very light, feels like you aren't wearing anything, ten year battery. What's not to love?..." Read more
"really good watch for the price small not to bulky only cons i found is the light when its dark only light up from one side but number still visible..." Read more
Customers like the durability of the watch. They mention it's thin, comfortable, and reliable.
"...It looks retro-awesome, it is reliable, pretty resistant to damage, it will survive a shower and even a short swim...." Read more
"can’t be happier with is. nice, durable and small" Read more
"...caught on a number of boxes / furniture and it somehow still hasn't broken the band...." Read more
"...Simple, reliable, and that 10-year battery life? Unreal...." Read more
Customers like the functionality of the watch. They mention it's easy to read, has a timer and stopwatch that work well.
"...omnipresent - everyone had one as it was cheap, not-ugly and did its job perfectly...." Read more
"Great little watch. The light sucks but is usable. The low profile of the watch rarely catches on things." Read more
"The light on it sucks, but it's not a big deal. The timer and stopwatch and such work well, and so does the alarm...." Read more
"Easy to read, functional, and looks good... on the right sized wrists...." Read more
Customers like the size of the watch. They mention it's small and looks good on the right sized wrists.
"can’t be happier with is. nice, durable and small" Read more
"Easy to read, functional, and looks good... on the right sized wrists...." Read more
"really good watch for the price small not to bulky only cons i found is the light when its dark only light up from one side but number still visible..." Read more
Customers are dissatisfied with the backlight of the watch. They mention it's not really backlit but has a small light in one corner.
"Great little watch. The light sucks but is usable. The low profile of the watch rarely catches on things." Read more
"The light on it sucks, but it's not a big deal. The timer and stopwatch and such work well, and so does the alarm...." Read more
"...It is not really backlit but has a small light in one corner which makes it very hard, if not impossible, to read in the dark...." Read more
Reviews with images

Genuine Review
Top reviews from Canada
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- Reviewed in Canada on June 7, 2023Verified PurchaseA month ago, I saw a video on Youtube that reminded me of this watch's existence; I remembered my friends wore it back when I was in high school. I immediately realized I must get it...
Its basic water resistance seemed like magic back in the olden days (Wow, look, it still works in a glass of water!) and it has a stopwatch that measures hundredths of a second AND IT HAS A LIGHT! Don't laugh, I am Gen-X. I made my own toys from carboard and scotch tape when I was a kid, I know how to use rotary phones and do research from books.
This watch came out just after the proper cyberpunk era of the 80's and it was omnipresent - everyone had one as it was cheap, not-ugly and did its job perfectly. You can even play the "double zero" quasi-game: run the stopwatch and try to stop it exactly when hundredths show 00.
This was and even today is a really handy device. It does not matter if you are a kid in the elementary school or a soldier, this watch will serve you well. It looks retro-awesome, it is reliable, pretty resistant to damage, it will survive a shower and even a short swim. Ultimately, if it gets destroyed, no biggie - just get another one or three.
The most ridiculous thing is that since I bought it a week ago, I had already two people tell me it's awesome!
Life is about small indulgences.
- Reviewed in Canada on October 6, 2024Verified PurchaseSimple. Light and beautiful watch.
- Reviewed in Canada on April 21, 2023Verified Purchasecan’t be happier with is. nice, durable and small
- Reviewed in Canada on September 15, 2024Verified PurchaseGood watch
- Reviewed in Canada on April 4, 2025Verified PurchaseInexpensive, very light, feels like you aren't wearing anything, ten year battery. What's not to love?
I'm not a fan of watches that look like a dinner plate on your wrist. If you agree, you might like this watch
- Reviewed in Canada on January 28, 2021Verified PurchaseGreat little watch. The light sucks but is usable. The low profile of the watch rarely catches on things.
- Reviewed in Canada on February 15, 2025Verified PurchaseNever been a watch guy, but this Casio changed that. Now it’s the most exciting part of my morning routine—strapping it on just feels right.
Simple, reliable, and that 10-year battery life? Unreal.
I originally got into it because my late grandpa had one, and restoring his was a special project. But it’s too precious to wear daily, so I picked up this one instead. It’s the perfect neutral watch—goes with everything, feels effortless to wear, and now I can’t imagine a day without it.
- Reviewed in Canada on February 4, 2021Verified PurchaseThe light on it sucks, but it's not a big deal. The timer and stopwatch and such work well, and so does the alarm. I use it everyday at work, and I do a lot of lifting / moving, and it's gotten caught on a number of boxes / furniture and it somehow still hasn't broken the band. Actually very surprised considering some of the boxes I've gotten it caught on and yanked have been quite heavy. Can't go wrong with a budget classic!
Top reviews from other countries
- EdwinReviewed in the United Kingdom on May 25, 2025
5.0 out of 5 stars ALWAYS FAVOURITE FOR DAILY USE
Verified PurchaseI love Casio F91-W. I loved the grey-coloured dial with black strap. The accuracy and ease of use is just sensational. It is highly waterproof resistable, durable (able to withstand accidental jolts and shocks) and works perfect. It is really a value-for-money watch and hence it's popular
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Daniel FloresReviewed in Mexico on May 26, 2024
4.0 out of 5 stars No es original
Verified PurchaseEs bonito y funcional, se siente de relativamente buena calidad, pero (por el precio es obvio) no es original, y la luz no es muy eficiente al iluminar en la oscuridad.
Lo compré hace ya 5 meses, y no he tenido ningún problema, es bueno.