---
product_id: 255894352
title: "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"
brand: "casio"
price: "¥16765"
currency: JPY
in_stock: true
reviews_count: 5
url: https://www.desertcart.jp/products/255894352-casio-f91w-series-digital-watch-water-resistant-led-light-1
store_origin: JP
region: Japan
---

# 30m Water Resistant 7-Year Battery Life 1/100 sec Stopwatch 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

**Brand:** casio
**Price:** ¥16765
**Availability:** ✅ In Stock

## Summary

> ⌚ Classic meets cutting-edge — your everyday essential with a vintage vibe!

## Quick Answers

- **What is this?** 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 by casio
- **How much does it cost?** ¥16765 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/255894352-casio-f91w-series-digital-watch-water-resistant-led-light-1)

## 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

- • **Timeless Durability:** 30 meters water resistance keeps you worry-free in daily life splashes and rain.
- • **Effortless Longevity:** Lightweight resin design paired with a 7-year battery means less hassle, more style.
- • **Stay Ahead with Alerts:** Daily alarm and hourly time signal keep your schedule sharp and on point.
- • **Light Up Your Day & Night:** LED backlight ensures clear visibility anytime, anywhere—never miss a moment.
- • **Precision at Your Fingertips:** 1/100 second stopwatch for exact timing, perfect for busy professionals on the go.

## Overview

The Casio F91W Series digital watch combines iconic vintage style with modern functionality, featuring 30-meter water resistance, a precise 1/100 second stopwatch, LED backlight, daily alarm, and an impressive 7-year battery life—all housed in a lightweight resin case designed for the professional on the move.

## Description

Product Description 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

Review: Solid - I like this watch. It’s more famous than oyster perpetuals. Obviously not more valuable but I like the green better than the original black F-91W it’s got more personality and for only $30 on desertcart is great considering you can wear it daily and not worry about losing or replacing it
Review: Da hora - Chegou certinho muito rápido 1 dia

## 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
- Hourly Time Signal.Approximate battery life of 3 years w/ SR626SW).Resin Glass

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07BQXXNQY |
| Additional Features | Alarm, Chronograph |
| Age Range Description | Adult |
| Band Color | Black |
| Band Material Type | Resin |
| Band Width | 19.25 Millimeters |
| Bands | 1 |
| Best Sellers Rank | #1,381 in Fashion ( See Top 100 in Fashion ) #38 in Men's Wrist Watches |
| Bezel Color | Green |
| Brand Name | Casio |
| Case Diameter | 35.5 Millimeters |
| Case Material Type | Resin |
| Case Thickness | 8.38 Millimeters |
| Character | Fashion |
| Clasp Type | Buckle |
| Closure Type | Buckle |
| Crystal | mineral |
| Customer Reviews | 4.6 out of 5 stars 2,450 Reviews |
| Dial Color | Gray |
| Display | Digital |
| EU Spare Part Availability Duration | 3 Years |
| Embellishment Feature | Stud |
| Face Style | Classic |
| Global Trade Identification Number | 00889232187587 |
| Included Components | Band |
| Item Type Name | Watch |
| Item Weight | 0.05 Pounds |
| Manufacturer | Casio |
| Manufacturer Part Number | F-91WM-3ACF |
| Material | Resin |
| Model Name | F-91WM-3ACF |
| Model Number | Casio F91W Serie, model 593 |
| Pattern | Solid |
| Power Source | Battery Powered |
| Shape | Square |
| Sport Type | Walking |
| Strap Type | Resin |
| Style Name | Classic |
| Theme | Vintage |
| UPC | 889232187587 |
| Watch Movement Type | Quartz |
| Water Resistance Depth | 30 Feet |
| Water Resistance Level | Water Resistant |

## Images

![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 - Image 1](https://m.media-amazon.com/images/I/41ffp7mAWbL.jpg)
![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 - Image 2](https://m.media-amazon.com/images/I/41u28VuVGXL.jpg)
![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 - Image 3](https://m.media-amazon.com/images/I/51or7k9ZsvL.jpg)
![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 - Image 4](https://m.media-amazon.com/images/I/4161z4cM2NL.jpg)
![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 - Image 5](https://m.media-amazon.com/images/I/51q34aEsO2L.jpg)

## Available Options

This product comes in different **Color, Style** 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

### ⭐⭐⭐⭐⭐ Solid
*by M***M on 30 May 2026*

I like this watch. It’s more famous than oyster perpetuals. Obviously not more valuable but I like the green better than the original black F-91W it’s got more personality and for only $30 on amazon is great considering you can wear it daily and not worry about losing or replacing it

### ⭐⭐⭐⭐⭐ Da hora
*by C***R on 10 March 2026*

Chegou certinho muito rápido 1 dia

### ⭐⭐⭐⭐⭐ Good old watch
*by M***E on 18 April 2026*

Les montres Casio ont toujours été de vraies petites merveilles intemporelles. Elles traversent les époques sans problèmes et sont toujours aussi fiables et agréables à porter. Ce modèle avec cadran spécial de F-91W ne fait pas exception. Une montre à posséder.

## 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 Japan*
*Store origin: JP*
*Last updated: 2026-08-07*