---
product_id: 725169318
title: "Casio F91W Series | Digital Watch | Waterproof | LED Light | 1/100 SEC Stopwatch | Permanent Display (HR, Min, SEC, PM, Date, Day) | Daily Alarm | Lightweight | 7 Year Battery, Black///White, Minimalist"
brand: "casio"
price: "₨42847"
currency: LKR
in_stock: true
reviews_count: 5
category: "Casio(カシオ)"
url: https://www.desertcart.lk/products/725169318-casio-f91w-series-digital-watch-waterproof-led-light-1-100
store_origin: LK
region: Sri Lanka
---

# Water Resistant up to 200M 7-Year Long-lasting Battery 1/100 SEC Stopwatch precision Casio F91W Series | Digital Watch | Waterproof | LED Light | 1/100 SEC Stopwatch | Permanent Display (HR, Min, SEC, PM, Date, Day) | Daily Alarm | Lightweight | 7 Year Battery, Black///White, Minimalist

**Brand:** casio
**Price:** ₨42847
**Availability:** ✅ In Stock

## Summary

> ⌚ Elevate your everyday with the iconic Casio F91W — where simplicity meets unstoppable reliability.

## Quick Answers

- **What is this?** Casio F91W Series | Digital Watch | Waterproof | LED Light | 1/100 SEC Stopwatch | Permanent Display (HR, Min, SEC, PM, Date, Day) | Daily Alarm | Lightweight | 7 Year Battery, Black///White, Minimalist by casio
- **How much does it cost?** ₨42847 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.lk](https://www.desertcart.lk/products/725169318-casio-f91w-series-digital-watch-waterproof-led-light-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

- • **All-Day Functionality:** Includes daily alarm, stopwatch, and permanent date/day display to keep you on schedule effortlessly.
- • **Eco-Friendly Resin Band:** Crafted from bio-based materials to reduce your environmental footprint while staying stylish.
- • **Timeless Minimalist Design:** Sleek, octagonal resin case with a clean digital display that fits every professional style.
- • **Reliable 7-Year Battery Life:** Set it and forget it—enjoy years of uninterrupted performance without battery anxiety.
- • **Water Resistant for Active Lifestyles:** 200 meters water resistance means you can confidently wear it swimming, diving, or in the rain.

## Overview

The Casio F91W is a minimalist digital watch featuring a durable bio-based resin band, a bright LED illuminator, and a precise 1/100 second stopwatch. Designed for professionals who value both style and function, it offers a 7-year battery life, daily alarm, and water resistance up to 200 meters, making it perfect for work, workouts, and weekend adventures.

## Description

Used for Decades - Equipped with digital LCD, the F-91 features a minimalist face, fewer mode indicators and environmentally friendly materials. Bands are made from bio-based resins and are expected to reduce environmental impact. With date/day display, alarm, stopwatch and other useful features, these watches are always ready for you

Review: Light weight and functions are simple use
Review: The Casio F91W is one of the best starter watches that are great for everday use (work, school, etc). This full black version of it looks AMAZING. It is notably a bit smaller than the actual Casio F91W but nontheless it looks great. I love it for its simplicity and three modes, it does everything that you need it to, without overcomplicating it. The alarm has always worked great, but I wouldn't rely on it waking you up in the morning. The stopwatch works like, well, like a stopwatch. And the actual time is great, came out of the box set up perfectly and you can switch it to 24 hours if you prefer that. The only CON that I mention is the Casio F91W uses a single green LED light on the left hand side, this in my opinion does nothing for night time checking. It is barely noticable and the camera can't even capture how bad it is. I do not deduct stars for this though, because you can still read the time in pitch black anyways. Overall, I reccomend the Casio F91W for anyone who needs an alarm, time, or stopwatch with nothing more.

## Features

- Made of eco-friendly (bio-based) resin band
- The LCD display is equipped with an illuminator function to ensure visibility in dark environments
- (Max) CR2016 model battery included with 7 years battery life
- Other features include alarm, stopwatch (chronograph), day of the week display and more

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0DDWDKRWT |
| ASIN  | B0DDWDKRWT |
| Additional Features | Alarm, Chronograph, Light Up |
| Age Range Description | Adult |
| Amazon Bestseller | #439,148 in Clothing, Shoes & Jewelry ( See Top 100 in Clothing, Shoes & Jewelry ) #3,476 in Men's Wrist Watches |
| Band Color | Black |
| Band Length | 220 Millimeters |
| Band Material Type | Resin |
| Band Width | 20 Millimeters |
| Bands | 1 |
| Brand Name | Casio |
| Case Diameter | 35.2 Millimeters |
| Case Material Type | Resin |
| Case Thickness | 8.5 Millimeters |
| Clasp Type | Buckle |
| Closure Type | Buckle |
| Crystal | Resin |
| Customer Reviews | 4.6 4.6 out of 5 stars (252) |
| Date First Available  | December 4, 2024 |
| Department  | Men |
| Dial Color | Black |
| Display | Digital |
| Face Style | Minimalist |
| Included Components | 1 x Digital Watch |
| Item Type Name | Casual Watch |
| Item Weight | 0.12 Kilograms |
| Item model number  | F-91WB-1A |
| Manufacturer | Casio |
| Manufacturer  | Casio |
| Manufacturer Part Number | F-91WB-1A |
| Model Name | F-91WB-1A |
| Model Number | F-91WB-1A |
| Package Dimensions  | 13.69 x 11.71 x 6.91 cm; 120 g |
| Pattern | Solid Black |
| Power Source | Battery Powered |
| Release date  | September 1, 2024 |
| Shape | Octagonal |
| Sport Type | Swimming, Diving |
| Strap Type | Resin strap |
| Style Name | Minimalist |
| UPC | 889232378329 |
| Warranty Type | Limited |
| Watch Movement Type | Quartz |
| Water Resistance Depth | 200 Meters |
| Water Resistance Level | Water Resistant |

## Images

![Casio F91W Series | Digital Watch | Waterproof | LED Light | 1/100 SEC Stopwatch | Permanent Display (HR, Min, SEC, PM, Date, Day) | Daily Alarm | Lightweight | 7 Year Battery, Black///White, Minimalist - Image 1](https://m.media-amazon.com/images/I/51B4HGpwHAL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by P***O on January 14, 2026*

Light weight and functions are simple use

### ⭐⭐⭐⭐⭐ Review
*by S***S on January 8, 2026*

The Casio F91W is one of the best starter watches that are great for everday use (work, school, etc). This full black version of it looks AMAZING. It is notably a bit smaller than the actual Casio F91W but nontheless it looks great. I love it for its simplicity and three modes, it does everything that you need it to, without overcomplicating it. The alarm has always worked great, but I wouldn't rely on it waking you up in the morning. The stopwatch works like, well, like a stopwatch. And the actual time is great, came out of the box set up perfectly and you can switch it to 24 hours if you prefer that. The only CON that I mention is the Casio F91W uses a single green LED light on the left hand side, this in my opinion does nothing for night time checking. It is barely noticable and the camera can't even capture how bad it is. I do not deduct stars for this though, because you can still read the time in pitch black anyways. Overall, I reccomend the Casio F91W for anyone who needs an alarm, time, or stopwatch with nothing more.

### ⭐⭐⭐⭐⭐ Review
*by I***O on February 23, 2026*

Lindo y funcional, todo lo que se necesita. Lo compre por que estaba harto de mi smartwatch y con este casio estoy mas que satisfecho

## 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 W800HG Series | Men’s Digital Watch | 100 Meter Water Resistance | Multi Function Alarm | 100 SEC Stopwatch | Auto Calendar | Countdown Timer | LED Light | Dual Time| 10 Year Battery

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*Product available on Desertcart Sri Lanka*
*Store origin: LK*
*Last updated: 2026-03-20*