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Casio Men's F-91WM-3ACF 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
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.
Product specifications
Watch Information
Brand, Seller, or Collection Name | Casio |
---|---|
Model Number | Casio F91W Serie, model 593 |
Part Number | F-91WM-3ACF |
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 | Alarm, Chronograph |
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. |
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 : B07BQXXNQY
- Item model number : Casio F91W Serie, model 593
- Country of origin : China
- Department : Mens
- 鶹 Rank: #4,113 in Clothing, Shoes & Accessories (See Top 100 in Clothing, Shoes & Accessories)
- #14 in Men's Wrist Watches
- Customer Reviews:
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
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Customer reviews
Customers say
Customers like the quality, appearance, and durability of the watch. They mention it's a great little digital watch, has a nice color, and is lightweight. Some say it's time-tested and holds up to a few years of abuse for boys. Customers also appreciate the ease of use, functionality, and waterproofing. However, some customers are disappointed with the lighting and have mixed opinions on the size.
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Customers like the quality of the watch. They mention it serves its purpose well, is a nice simple watch, and the finish is really good for the price. Some say it's amazing to have as an everyday watch that you can replace as needed.
"nice watch, fit for adult, small light on the side (not so powerfull but i's ok for the price)" Read more
"You get what you see, great watch at a great price!" Read more
"Amazing product! This purchase was a replacement. I've been using this model for decades. It lasts a long time...." Read more
"Great Little digital watch! Comfortable strap. Feels like I'm wearin' nothin' at all, nothin'at all...." Read more
Customers like the appearance of the watch. They mention it's nice-looking, minimalist, and subtle. They also say the text is crispy and easy to read.
"Sleek, subtle, and stylish!..." Read more
"Nice and thin, but......" Read more
"...It's a rad little watch that does what it's meant to do - quickly tell you the time. Only reason it's not worth 5 stars, is the nightlight...." Read more
"...It looks great on my medium 7.5 inch wrist. Update Mar 2-24 Last week I put in a shirt pocket as I was doing bike repairs with solvents...." Read more
Customers like the lightweight design of the watch. They mention it's easy to read, slim, and has a thin case.
"...I've been using this model for decades. It lasts a long time. It is lightweight, slim, and comfortable. Never had any issues with this model...." Read more
"amazing! so slim! i love it I love this so much!" Read more
"Light weight easy to use" Read more
"Needed a simple watch to be slim, small and light as I have a small wrist and don't like the bulkiness of larger watches...." Read more
Customers like the durability of the watch. They mention it holds up to a few years of abuse for boys and is time-tested. They also say it's a good watch for daily use.
"...to give it to someone as a gift this more than pays for itself in reliability." Read more
"10/10 great watch low profile,lightweight and durable...." Read more
"Bought for a cheap vacation watch. Screen cracked in the first 7-10 days and allwed water from the pool in. The watch was toasted...." Read more
"...I've been using this model for decades. It lasts a long time. It is lightweight, slim, and comfortable. Never had any issues with this model...." Read more
Customers like the functionality of the watch. They mention it serves its purpose very well, is useful, stylish, and comfortable.
"...It's the perfect classic simple watch and works great!" Read more
"Watch works fine but the light only lights up half of the screen" Read more
"It's a watch and it works. I wear it 24 hours a day, in the shower and in the river. Classic Casio." Read more
"A very useful ad simple watch to own ! :)" Read more
Customers like the ease of use of the watch. They mention it's simple, easy to configure, and straightforward with alarm, timer, and stopwatch.
"It is especially easy to to use. Gives time accurate for 30 days Every 30 days sync seconds to radio time signals." Read more
"A very useful ad simple watch to own ! :)" Read more
"I buy these casios because they are simple, cheap and bulletproof. And I tend to lose them. This is my third F91 and favorite yet, Love the color" Read more
"Light weight easy to use" Read more
Customers have mixed opinions about the size of the watch. Some mention it's ideal for children, while others say it's too small and barely fits their wrists.
"Casio F-91WM-3AEF with green case. Pro: not expensive; small and thin case; beautiful green case, very accurate time keeping; 7 year..." Read more
"...It is small on my adult wrist, but would have been big on my 13-year old wrist...." Read more
"...It lasts a long time. It is lightweight, slim, and comfortable. Never had any issues with this model...." Read more
"...When I opened the box on this one I had a good chuckle. It’s small...." Read more
Customers are dissatisfied with the lighting of the watch. They mention it's terrible, barely works, and has 1980s light technology.
"...Only reason it's not worth 5 stars, is the nightlight...." Read more
"Watch works fine but the light only lights up half of the screen" Read more
"...Button it has helps in no-light situations although you may struggle abit to read your watch if it's too dark...." Read more
"...It has 1980's light technology, so it barely lights up half the numbers. See photo. If you need good lighting, don't buy this watch...." Read more
Reviews with images

Recommend
Top reviews from Canada
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Reviewed in Canada on February 13, 2020Verified PurchaseLa qualité de fabrication, sa fiabilité et son prix sont des points à prendre en considération lors de l'achat d'une montre. Il faut dire que Casio fabrique tout de même des montres depuis très longtemps. Ce modèle en particulier date de 1989... Ceci dit, je l'adore! L'utilisation est simple et elle est très compact. Je suis très heureux car je souffre d'une allergie aux métaux, qui déclenche des sortes de crises d’eczéma/urticaire, mais celle-ci ne me cause aucun soucis. Cependant, le bracelet n'est pas très grand, mais il me convient tout de même. Longueur total d'un bout à l'autre, environ 23 cm, donc je pense que les poignets de plus de 20 cm, c'est la limite pas mal. Pour la lumière, c'est très minimaliste... une petite DEL verte/jaune. Pour la résistance à l'eau, c'est indiqué qu'elle est seulement Water Resist et non WaterProof, mais depuis que je l'ai, je l'ai toujours gardé lorsque je prenais une douche et elle fonctionne toujours très bien. Je n'ai pas essayé de l'immerger complètement dans l'eau...
- Reviewed in Canada on April 3, 2025Verified PurchaseAmazing product! This purchase was a replacement. I've been using this model for decades. It lasts a long time. It is lightweight, slim, and comfortable. Never had any issues with this model. Of course the battery doesn't last forever, but it does last for years.
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Reviewed in Canada on July 14, 2025Verified Purchaseparfait, rien à dire!!!
- Reviewed in Canada on May 14, 2022Verified PurchaseGreat Little digital watch! Comfortable strap. Feels like I'm wearin' nothin' at all, nothin'at all. As you can tell by my Costa Rica watch tan, this watch is quite a bit smaller than my usual 50mm daily Suunto. Upon first wearing, I noticed it's super low profile, very light, and I don't smash it or get it caught on everything like I do with larger watches. It's a rad little watch that does what it's meant to do - quickly tell you the time. Only reason it's not worth 5 stars, is the nightlight. The classic style nightlight only illuminates the left two numbers - I know its retro but surely this feature can be improved upon slightly in 2022! I purchased this Casio along with an MDC infantry field watch, and it took me about 30 seconds to choose the Casio as the favourite of the two. If you're considering it, just grab it, you can't go wrong for the price! Don't complain about its size, it's how you use it that counts.
Great Little digital watch! Comfortable strap. Feels like I'm wearin' nothin' at all, nothin'at all. As you can tell by my Costa Rica watch tan, this watch is quite a bit smaller than my usual 50mm daily Suunto. Upon first wearing, I noticed it's super low profile, very light, and I don't smash it or get it caught on everything like I do with larger watches. It's a rad little watch that does what it's meant to do - quickly tell you the time. Only reason it's not worth 5 stars, is the nightlight. The classic style nightlight only illuminates the left two numbers - I know its retro but surely this feature can be improved upon slightly in 2022! I purchased this Casio along with an MDC infantry field watch, and it took me about 30 seconds to choose the Casio as the favourite of the two. If you're considering it, just grab it, you can't go wrong for the price! Don't complain about its size, it's how you use it that counts.
Images in this review
- Reviewed in Canada on July 4, 2025Verified PurchaseLightweight and waterproof! I love this watch and price and quality is great!
- Reviewed in Canada on June 1, 2023Verified PurchaseI heard these digital watches were pretty good and I can gladly confirm so.
They do gurantee a battery life of up to 10 years, and they do have instructions on what to do if moisture does get into the watch, so far I'm careful and only droplets of water have landed onto the watch,
The watch itself is fairly thin and can adjust to many wrists, it has an easy to read display and the "Light"
Button it has helps in no-light situations although you may struggle abit to read your watch if it's too dark.
The watch also has the ability to switch between 24hour and 12 hour modes seamlessly.
Second, when I was trying to set up the alarm I had to scroll past each minute and hour and if I missed my place I couldn't find a way to go back so that may annoy some folks if you're not careful.
I would recommend not testing the water-resistance as even in the notes it's not wholly resistant, but if it's your first watch, or you want to give it to someone as a gift this more than pays for itself in reliability.
5.0 out of 5 starsI heard these digital watches were pretty good and I can gladly confirm so.An amazing digital watch for an amazing price!
Reviewed in Canada on June 1, 2023
They do gurantee a battery life of up to 10 years, and they do have instructions on what to do if moisture does get into the watch, so far I'm careful and only droplets of water have landed onto the watch,
The watch itself is fairly thin and can adjust to many wrists, it has an easy to read display and the "Light"
Button it has helps in no-light situations although you may struggle abit to read your watch if it's too dark.
The watch also has the ability to switch between 24hour and 12 hour modes seamlessly.
Second, when I was trying to set up the alarm I had to scroll past each minute and hour and if I missed my place I couldn't find a way to go back so that may annoy some folks if you're not careful.
I would recommend not testing the water-resistance as even in the notes it's not wholly resistant, but if it's your first watch, or you want to give it to someone as a gift this more than pays for itself in reliability.
Images in this review
- Reviewed in Canada on March 21, 2025Verified PurchaseExtremely light and exactly 35.5mm. I'm a owner of a few high-end watches but absolutely nothing will surpass the practicality of the F91. There's a ton of strap holes so no matter if you have a small or big wrist, this watch is for YOU!
10/10
Extremely light and exactly 35.5mm. I'm a owner of a few high-end watches but absolutely nothing will surpass the practicality of the F91. There's a ton of strap holes so no matter if you have a small or big wrist, this watch is for YOU!
10/10
Images in this review
- Reviewed in Canada on July 8, 2025Verified PurchaseWatch works fine but the light only lights up half of the screen
Top reviews from other countries
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MichelinaReviewed in Germany on July 28, 2019
5.0 out of 5 stars Casio Uhr
Verified PurchaseDas Design ist genau so wie auf dem Bild. Schnelle Lieferung bzw. sogar noch schneller als erwartet.
- DangReviewed in Australia on December 21, 2020
5.0 out of 5 stars Reliable watch that is exceptional value for money
Verified PurchaseSimple, functional, super tough beater watch that has a great retro look and is exceptional value for money. You can’t go past this as your simple choice for a hard wearing watch that won’t let you down. Highly satisfied with the F91W, only problem now is that I want to own the other colour variations!