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⌚ Timeless tech meets modern hustle — stay sharp, stay ahead.
The Casio F91WB-1A is a minimalist digital watch featuring a durable bio-based resin band, precise 1/100 second stopwatch, LED backlight for low-light visibility, and water resistance up to 200 meters. Designed for professionals who value reliability and sustainability, it boasts an impressive 7-year battery life and essential daily functions like alarm, date, and day indicators.






| ASIN | B0DDWDKRWT |
| Additional Features | Alarm, Chronograph, Light Up |
| Age Range Description | Adult |
| Band Color | Black |
| Band Length | 22 centimeters |
| Band Material Type | Resin |
| Band Width | 20 millimeters |
| Bands | 1 |
| Best Sellers Rank | #1,533 in Clothing, Shoes & Jewelry ( See Top 100 in Clothing, Shoes & Jewelry ) #1 in Men's Wrist Watches |
| Brand Name | Casio |
| Case Diameter | 35.2 millimeters |
| Case Material Type | Resin |
| Case Thickness | 8.5 millimeters |
| Clasp Type | Buckle |
| Closure Type | Buckle |
| Crystal | Resin |
| Customer Reviews | 4.6 out of 5 stars 341 Reviews |
| Dial Color | Black |
| Display | Digital |
| Face Style | Minimalist |
| Included Components | 1 x Digital Watch |
| Item Type Name | Casual Watch |
| Item Weight | 0.12 kg |
| Manufacturer | Casio |
| Manufacturer Part Number | F-91WB-1A |
| Model Name | F-91WB-1A |
| Model Number | F-91WB-1A |
| Power Source | Battery Powered |
| Shape | Octagonal |
| Sport Type | Walking |
| Strap Type | Two Piece Strap |
| Style Name | Minimalist |
| UPC | 889232378329 |
| Unit Count | 1 Count |
| Warranty Type | Limited |
| Watch Movement Type | Quartz |
| Water Resistance Depth | 200 meters |
| Water Resistance Level | Water Resistant |
A**X
First Casio
Really happy with the black minimalist look they gave this. Very clean. This is my first Casio watch. I figured it was a good place to start. My wrist is just about 7in and I wear watches tight, so it doesn’t look terribly small imo. Did the aluminum foil mod to help reflect the backlight. Improved lowlight visibility noticeably (I accidentally scratched the inside of the watch face when doing that, which now lets that sliver of light through). Super light, and the optional hourly chime is a nice touch. It’s nice on days off when you want to be a little more present. Only downside is the price. I bought this at $37 and it’s really not worth it. I love the watch, but I would feel better looking at it everyday if it was $20, maybe $25 at the most.
L**.
A nice, simple watch!
I love the F91W. It's simple, works well, and just looks good.
G**Y
Best Seller for a Reason
The top workhorse since 1989, you can't go wrong with the F91 W. And this version takes it to another level pf minimalism and elegance
P**.
New take on a classic
What more could be said about the perfect watch other than they improved the quality of the strap. I’m not sure if that would justify the higher price. This is my third F 91W. This watch appears larger on wrist because of the negative space on the watch face. If your wrist is larger than 7 1/2 inches this watch is going to appear small on wrist.
B**N
For the Price......Don't Even Blink, Just Get It
This is a timeless classic. It’s hard to believe how well it goes with just about any outfit—casual or a bit dressier, it always fits right in. The watch is incredibly reliable and durable, and I’ve come to trust it for everyday use without worry. I don’t think I’ll ever buy another watch besides this one, whether in black or silver. I switch between the two depending on the day, and I love them both equally. Simple, functional, and classic—this watch really stands the test of time.
M**N
LED light bad
Great looking watch. A bit smaller than I expected but works out well for the simplicity of it. The strap is good and easily adjustable. Reason why it’s not a 5 star is because the led light used for when it’s dark out is pretty bad. Barely lights up the screen but I mean hey for the price not bad
A**A
The watch that will outlive you
The watch that will outlive you. Made by the greats at Casio. Durable, functional and precise. Unbeatable engineering. I wear this little guy everyday almost everywhere. Still looks spanking new with no scratches. Easy to learn to use the alarm function and timer. Strap feels good and has plenty of room for any wrist size. Honestly, this is the perfect watch gift for any watch lover.
L**.
Simple, nice, reliable and comfortable!
I’m very happy with this watch. It is simple, light, and comfortable to wear every day. The time is easy to read and the buttons work well. The battery lasts a long time and the alarm is useful. For the price, the quality is really good. It does exactly what I need. I would recommend it if you want a basic and reliable watch.
P**O
Excellent
Light weight and functions are simple use
S**S
Great Budget Friendly Watch
The Casio F91W is one of the best starter watches that are great for everday use (work, school, etc). This full black version of it looks AMAZING. It is notably a bit smaller than the actual Casio F91W but nontheless it looks great. I love it for its simplicity and three modes, it does everything that you need it to, without overcomplicating it. The alarm has always worked great, but I wouldn't rely on it waking you up in the morning. The stopwatch works like, well, like a stopwatch. And the actual time is great, came out of the box set up perfectly and you can switch it to 24 hours if you prefer that. The only CON that I mention is the Casio F91W uses a single green LED light on the left hand side, this in my opinion does nothing for night time checking. It is barely noticable and the camera can't even capture how bad it is. I do not deduct stars for this though, because you can still read the time in pitch black anyways. Overall, I reccomend the Casio F91W for anyone who needs an alarm, time, or stopwatch with nothing more.
Y**I
Bueno y de calidad
Un reloj bastante bonito aún hoy día, todo en orden
J**S
Casio F 91 W. Um clássico atemporal.
O produto chegou rápido e bem embalado. Perfeito. O F91 W, com um novo design ficou ainda mais bonito. Quanto a qualidade, a marca já fiz tudo: Casio. Muito satisfeito com a compra.
G**L
Ótima qualidade!
Simplesmente o melhor.
Trustpilot
4 days ago
2 weeks ago