---
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: "$75.23"
currency: USD
in_stock: true
reviews_count: 5
url: https://www.desertcart.us/products/255894352-casio-f91w-series-digital-watch-water-resistant-led-light-1
store_origin: US
region: United States of America
---

# 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:** $75.23
**Availability:** ✅ In Stock

## Summary

> ⌚ Timeless tech meets modern hustle — stay sharp, stay ahead!

## 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?** $75.23 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/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

- • **Set It and Forget It:** Daily alarm and hourly time signal keep you punctual without the hassle.
- • **Light Up Your Schedule:** LED backlight guarantees clear visibility day or night—stay on time, always.
- • **Wear It All Day, Every Day:** Ultra-lightweight resin design with a 7-year battery means comfort and reliability that lasts.
- • **Effortless Everyday Durability:** 30 meters water resistance protects against splashes and rain, perfect for your busy lifestyle.
- • **Precision Timing at Your Fingertips:** 1/100 second stopwatch ensures you never miss a beat, whether at work or play.

## Overview

The Casio F91W is a classic digital watch featuring 30-meter water resistance, a precise 1/100 second stopwatch, LED backlight for easy reading, daily alarm, and an impressive 7-year battery life. Lightweight and durable with a resin case and band, it’s designed for professionals who value reliability and understated style.

## 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: Timeless - Top quality time piece. Very lightweight. I’m impressed 👍🏽
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 | #1,589 in Fashion ( See Top 100 in Fashion ) #64 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 2,402 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 | 21 g |
| 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

### ⭐⭐⭐⭐⭐ Timeless
*by A***N on 4 October 2025*

Top quality time piece. Very lightweight. I’m impressed 👍🏽

### ⭐⭐⭐⭐⭐ 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 United States of America*
*Store origin: US*
*Last updated: 2026-07-04*