---
product_id: 49419757
title: "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: "₩108056"
currency: KRW
in_stock: true
reviews_count: 12
category: "Casio"
url: https://www.desertcart.kr/products/49419757-classic-f91w-series-quartz-watch-water-resistant-1-100-second
store_origin: KR
region: South Korea
---

# Water resistant splash guard Auto calendar & 12/24-hr format 1/100 sec stopwatch precision 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:** ₩108056
**Availability:** ✅ In Stock

## Summary

> ⌚ Timeless tech for the savvy professional—stay sharp, stay ahead.

## Quick Answers

- **What is this?** 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?** ₩108056 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/49419757-classic-f91w-series-quartz-watch-water-resistant-1-100-second)

## 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

- • **Splash-Ready Durability:** Water resistant design keeps up with your active lifestyle—no submersion needed.
- • **Classic Minimalist Design:** Sleek rectangular resin case with stainless steel back—timeless style meets modern function.
- • **Effortless Time Management:** Auto calendar and dual 12/24-hour formats keep you perfectly synced every day.
- • **Reliable Everyday Companion:** Lightweight, battery-powered quartz movement ensures dependable performance without fuss.
- • **Precision Timing at Your Fingertips:** Experience ultra-accurate 1/100 second stopwatch for flawless time tracking.

## Overview

The Casio Classic F91W Series is a lightweight, water resistant digital watch featuring a precise 1/100 second stopwatch, daily alarm, hourly time signal, and an auto calendar with 12/24-hour display. Its durable resin case with stainless steel back offers a minimalist, vintage-inspired design perfect for everyday wear. Powered by a long-lasting lithium battery, this quartz movement watch is a reliable, no-nonsense timepiece favored by professionals who value function and style.

## Description

Shop Casio Men's 'Vintage' Quartz Metal and Resin Casual Watch, Color:Black (Model: F-91WM-7ACF), White, F91WM-7A ✓ free delivery ✓ free returns on eligible orders.

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.
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.

## Features

- Water resistant, not water proof, do not submerge in water, digital sport watch in rectangle case, alarm, chronograph functions, and night light, quartz movement with digital display
- Measuring modes include net time, split time, and first and second place times, functions include digital stopwatch, hourly time signal, auto calendar, and day/date.
- Quartz Movement
- Case Diameter: 33mm
- Not water resistant

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01N7XKNSX |
| Age range | Adult |
| Batteries | 1 Lithium Metal batteries required. (included) |
| Batteries included? | Yes |
| Best Sellers Rank | 27,664 in Fashion ( See Top 100 in Fashion ) 122 in Men's Wrist Watches |
| Brand | Casio |
| Color | White |
| Customer Reviews | 4.6 4.6 out of 5 stars (48,689) |
| Date First Available | 10 Feb. 2017 |
| Department | Unisex |
| Display type | Digital |
| Features | Chronometer, Alarm, Lightweight |
| Included components | Resin Band, Battery |
| Is discontinued by manufacturer | No |
| Item model number | F-91WM-7ACF |
| Manufacturer | Casio |
| Material type | Resin |
| Number of items | 1 |
| Power source | Battery Powered |
| Product Dimensions | 10.67 x 8.38 x 5.59 cm; 90.7 g |
| Seasons | Fresh |
| Shape | Rectangular |
| Sport | Walking |
| Style | F91WM-7A |
| Weight | 23 g |

## Images

![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/61jVRs9rmwL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 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.

### ⭐⭐⭐⭐⭐ 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.

### ⭐⭐⭐⭐⭐ 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 Men's Vintage A168WA-1 Electro Luminescence Watch
- 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

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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-01-30*