---
product_id: 316980728
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: "¥5155"
currency: JPY
in_stock: false
reviews_count: 10
url: https://www.desertcart.jp/products/316980728-casio-f91w-series-digital-watch-water-resistant-led-light-1
store_origin: JP
region: Japan
---

# LED Light for night visibility 7 Year Long-lasting Battery 1/100 SEC Stopwatch precision 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:** ¥5155
**Availability:** ❌ Out of Stock

## Summary

> ⌚ Classic meets cutting-edge: Timeless style with modern precision.

## 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?** ¥5155 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/316980728-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

- • **Effortless Daily Alerts:** Built-in daily alarm keeps your schedule sharp and on track.
- • **Endurance You Can Trust:** 7-year battery life means less hassle, more reliability.
- • **Always On, Always Visible:** LED backlight ensures you never miss a moment, day or night.
- • **Lightweight & Comfortable:** Sleek 33mm case and featherweight design for all-day wearability.
- • **Precision Timing at Your Fingertips:** 1/100 second stopwatch keeps you ahead of every second.

## Overview

The Casio F91W is a lightweight, digital quartz watch featuring a 1/100 second stopwatch, LED backlight, and daily alarm. With a durable 33mm resin case and a remarkable 7-year battery life, it offers reliable timekeeping and essential chronograph functions for professionals who value both style and functionality.

## Description

Buy Casio Men's 'Classic' Quartz Metal and Resin Casual Watch, Color:Black (Model: F-91WM-9ACF) online on desertcart.ae at best prices. ✓ Fast and free shipping ✓ free returns ✓ cash on delivery available on eligible purchase.

Review: Good quality, - Good value compared to what i paid.
Review: Beautiful watch - Beautiful watch

## 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  | B01MZF6LL2 |
| Batteries  | 1 Lithium Metal batteries required. (included) |
| Best Sellers Rank | #402 in Fashion ( See Top 100 in Fashion ) #4 in Men's Wrist Watches |
| Customer reviews | 4.6 4.6 out of 5 stars (53,923) |
| Date First Available  | 24 February 2017 |
| Department  | Men |
| Is Discontinued By Manufacturer  | No |
| Item model number  | F91WM-9A |
| Manufacturer  | Casio |
| Product Dimensions  | 10.67 x 7.62 x 5.33 cm; 90.7 g |

## 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/41v28pNLyoL.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/51DuIbRU7JL.jpg)

## 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

### ⭐⭐⭐⭐⭐ Good quality,
*by H***N on 8 January 2024*

Good value compared to what i paid.

### ⭐⭐⭐⭐⭐ Beautiful watch
*by S***K on 18 June 2025*

Beautiful watch

### ⭐⭐⭐⭐ Classic watch. Worth in collectibles.
*by Y***N on 25 August 2025*

Pros: Classic watch. Should have with every watch enthusiasts. Clear visibility of time. Cons: Very small case and buttons are very delicate. Not an everyday watch because it’s very small even for medium wrists.

## Frequently Bought Together

- Casio
- 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
- CASIO STANDARD DIGITAL WATCH WITH LED-LIGHT F-91W-1JF

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**Shop now:** [https://www.desertcart.jp/products/316980728-casio-f91w-series-digital-watch-water-resistant-led-light-1](https://www.desertcart.jp/products/316980728-casio-f91w-series-digital-watch-water-resistant-led-light-1)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-01-24*