---
product_id: 105923045
title: "Casio Classic F91W Series Quartz Watch | Water Resistant |1/100 Second Stopwatch | Daily Alarm | Hourly Time Signal |Auto Calendar |SS Caseback |12/24-Hour Format"
brand: "casio"
price: "5802309₫"
currency: VND
in_stock: true
reviews_count: 11
url: https://www.desertcart.vn/products/105923045-casio-classic-f91w-series-quartz-watch-water-resistant-1-100
store_origin: VN
region: Vietnam
---

# Water Resistant up to daily splashes 7-Year Battery Life endurance 1/100 Second Stopwatch precision Casio Classic F91W Series Quartz Watch | Water Resistant |1/100 Second Stopwatch | Daily Alarm | Hourly Time Signal |Auto Calendar |SS Caseback |12/24-Hour Format

**Brand:** casio
**Price:** 5802309₫
**Availability:** ✅ In Stock

## Summary

> ⌚ Classic meets relentless reliability — the watch that works as hard as you do.

## Quick Answers

- **What is this?** Casio Classic F91W Series Quartz Watch | Water Resistant |1/100 Second Stopwatch | Daily Alarm | Hourly Time Signal |Auto Calendar |SS Caseback |12/24-Hour Format by casio
- **How much does it cost?** 5802309₫ with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/105923045-casio-classic-f91w-series-quartz-watch-water-resistant-1-100)

## Best For

- casio enthusiasts

## Why This Product

- Trusted casio brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Precision Timing:** 1/100 second stopwatch lets you track your productivity or workouts with exactness.
- • **Smart Simplicity:** Daily alarm, hourly signal, and auto calendar keep your schedule sharp without the bulk.
- • **Timeless Durability:** Iconic resin case and strap built to last through daily hustle and casual adventures.
- • **Effortless Visibility:** LED backlight ensures you never miss a beat, day or night.
- • **Always On, Always Ready:** 7-year battery life means less fuss, more focus on what matters.

## Overview

The Casio Classic F91W is a lightweight, water-resistant digital watch featuring a 1/100 second stopwatch, daily alarm, hourly time signal, and an auto calendar. With a durable resin case and strap, LED backlight for easy reading in any light, and an impressive 7-year battery life, it’s the perfect blend of minimalist design and practical functionality for professionals who value reliability and timeless style.

## Description

Shop Casio F91W Series | Digital Watch | Water Resistant | LED Light | 1/100 SEC Stopwatch | Regular Time Keeping (HR, Min, SEC, PM, Date, Day) | Daily Alarm | Lightweight | 7 Year Battery, Grey, F91W ✓ free delivery ✓ free returns on eligible orders.

Review: Excellent Value Timepiece - I have bought this same make & model of watch for something like 20 years or more, this latest (due to losing the last one on holiday) being my 4th. I did change the battery on the first (after 5 years+) but have not bothered since, as the cost of a battery was a significant % of the cost of a new watch - a bit like changing a car when the ashtray gets full!!! But up to personal choice. I had one where the rubbery strap split and broke after about 4 years- but again the cost of a strap outweighed just getting a new watch, and besides, I do not personally like to wear a watch on my wrist, just keep in my shoulder bag/trouser pocket!!! (so that one with no strap lasted me a further 3 years, before the battery died) So, if a cheap, inexpensive, accurate (20 seconds slow after 1 year) "throwaway when battery/strap broken/stopped" style of watch is what you are looking for - then in my opinion this one is a good choice. Oh - and finally, yes the light at night is not very bright (I have to also pop my reading glasses on), and the alarm is not very loud (but I find good enough as a gentle reminder for 20 seconds) - but don't a lot of people these days also have mobile/cell 'phones that do all that (and tell the time!).....so good enough as a secondary/auxiliary time piece in my view, with also handy stopwatch/time counter function.
Review: The perfect watch for wise people. Anything more is pure vanity. - The only things to survive the apocalypse will be cockroaches and Casio F-91Ws. The watch collector's watch - smart, accurate, indestructible, cheap. Does all you ever really need a watch to do. Anything more is pure vanity. Be smart - buy one, buy them all. You know it makes sense.

## Features

- Water Resistant
- LED Back light ensures easy reading in day or night
- 1/100 Second Stop Watch (Measuring Capacity: 59'59.99")
- Daily Alarm
- International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07C9F8XLL |
| Age Range Description | Adult |
| Band Colour | Black |
| Band Material Type | Resin |
| Band Width | 19.25 Millimetres |
| Bands | 2 |
| Best Sellers Rank | 16,465 in Fashion ( See Top 100 in Fashion ) 72 in Men's Wrist Watches |
| Brand Name | Casio |
| Case Diameter | 35.5 Millimetres |
| Case Material Type | Resin |
| Case Thickness | 8.38 Millimetres |
| Character | Fashion |
| Clasp Type | Buckle |
| Closure Type | Buckle |
| Crystal | mineral |
| Customer Reviews | 4.6 4.6 out of 5 stars (49,633) |
| Dial Color | Gray |
| Display | Digital |
| Embellishment Feature | Crystal |
| Face Style | Gray, minimalist, or digital |
| Global Trade Identification Number | 00889232187525, 08892321875250 |
| Included Components | watch band |
| Item Shape | Rectangular |
| Item Type Name | Watch |
| Item Weight | 0.05 Pounds |
| Manufacturer | Casio |
| Manufacturer Part Number | F-91WM-1BCF |
| Model Name | F-91WM-1BCF |
| Model Number | F-91WM-1BCF |
| Pattern | Solid |
| Power Source | Battery Powered |
| Series Number | 107234743 |
| Special Features | Alarm, Second Hand, Water Resistant |
| Sport Type | Walking |
| Strap Type | Two Piece Strap |
| Style Name | F91W |
| Theme | Accessories |
| UPC | 889232187525 |
| Unit Count | 1 Count |
| Watch Movement Type | Quartz |
| Water Resistance Level | Water Resistant |

## Images

![Casio Classic F91W Series Quartz Watch | Water Resistant |1/100 Second Stopwatch | Daily Alarm | Hourly Time Signal |Auto Calendar |SS Caseback |12/24-Hour Format - Image 1](https://m.media-amazon.com/images/I/61WO7fKhX0L.jpg)
![Casio Classic F91W Series Quartz Watch | Water Resistant |1/100 Second Stopwatch | Daily Alarm | Hourly Time Signal |Auto Calendar |SS Caseback |12/24-Hour Format - Image 2](https://m.media-amazon.com/images/I/613xQ4HlbZL.jpg)
![Casio Classic F91W Series Quartz Watch | Water Resistant |1/100 Second Stopwatch | Daily Alarm | Hourly Time Signal |Auto Calendar |SS Caseback |12/24-Hour Format - Image 3](https://m.media-amazon.com/images/I/81rGwCWZaHL.jpg)

## Available Options

This product comes in different **Color** options.

## Questions & Answers

**Q: How are they charging $10 for this $3 watch from 1990?**
A: Anything that was $3 in 1990 is now $10.  Back in 1990 gas was $1.16/gal.  The average home price was under $150000.  As time moves on prices go up.

**Q: Does the count down timer be set to seconds?**
A: No countdown timer. Look at Model F201WA-1A for that feature.

**Q: how far in depth is the water resist**
A: If you want to be absolutely safe, get the Casio MRW200 dive watch which is good for 100 m.
Casio F91W is water resistant and you could take it in shower, swimming, etc.

**Q: The rubber band broke after 2 years of use. I love this watch and don't want to get a new one. Any tips for a replacement band? Maybe a nylone one?**
A: Aliexpress or ebay you'll find almost exact generic replacements for a couple bucks shipped. Search for words like F91W strap, 18mm watch band. You can also use normal 18mm spring bars instead of the pins that are stock with the F91W.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Excellent Value Timepiece
*by D***G on 12 November 2016*

I have bought this same make & model of watch for something like 20 years or more, this latest (due to losing the last one on holiday) being my 4th. I did change the battery on the first (after 5 years+) but have not bothered since, as the cost of a battery was a significant % of the cost of a new watch - a bit like changing a car when the ashtray gets full!!! But up to personal choice. I had one where the rubbery strap split and broke after about 4 years- but again the cost of a strap outweighed just getting a new watch, and besides, I do not personally like to wear a watch on my wrist, just keep in my shoulder bag/trouser pocket!!! (so that one with no strap lasted me a further 3 years, before the battery died) So, if a cheap, inexpensive, accurate (20 seconds slow after 1 year) "throwaway when battery/strap broken/stopped" style of watch is what you are looking for - then in my opinion this one is a good choice. Oh - and finally, yes the light at night is not very bright (I have to also pop my reading glasses on), and the alarm is not very loud (but I find good enough as a gentle reminder for 20 seconds) - but don't a lot of people these days also have mobile/cell 'phones that do all that (and tell the time!).....so good enough as a secondary/auxiliary time piece in my view, with also handy stopwatch/time counter function.

### ⭐⭐⭐⭐⭐ The perfect watch for wise people. Anything more is pure vanity.
*by S***N on 21 August 2025*

The only things to survive the apocalypse will be cockroaches and Casio F-91Ws. The watch collector's watch - smart, accurate, indestructible, cheap. Does all you ever really need a watch to do. Anything more is pure vanity. Be smart - buy one, buy them all. You know it makes sense.

### ⭐⭐⭐⭐⭐ Awesome little watch...
*by M***P on 5 September 2022*

I bought this watch for times when I was doing outdoor rough and tumble stuff. I have other watches for dress, but this little watch was a real surprise performer. It has been totally reliable and worked well after all sorts of abuse. I cannot recommend this enough. For the price you pay it is an absolute steal, you won't be disappointed. It puts a Seiko I have to shame. If I have to mention a downside, I'd say getting you're head around the buttons can be rather interesting, and the back light isn't great. But the positives easily outweigh those negatives. I don't know how Casio can produce such a little gem for such little money. One of my better buys.

## Frequently Bought Together

- Casio F91W Series | Digital Watch | Water Resistant | LED Light | 1/100 SEC Stopwatch | Regular Time Keeping (HR, Min, SEC, PM, Date, Day) | Daily Alarm | Lightweight | 7 Year Battery
- Casio AE1200WH Series | Men’s Digital Watch | 100M WR | Multi Alarms | 100 SEC Stopwatch | Countdown Timer | World Map for World Time | LED Light | LC Analog Display | 10 Year Battery
- Casio A158WA Series | Unisex Digital Watch | Vintage | WR | 100 SEC Stop Watch | Daily Alarm | Regular Time Keeping: Hour, Minute, Second, PM, Date, Day | Led Light | 7 Yr Battery

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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-04-26*