---
product_id: 678407437
title: "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: "₩111005"
currency: KRW
in_stock: true
reviews_count: 11
category: "Casio"
url: https://www.desertcart.kr/products/678407437-f91w-series-digital-watch-water-resistant-led-light-1-100
store_origin: KR
region: South Korea
---

# Water Resistant up to 200M 7-Year Long-lasting Battery 1/100 SEC Stopwatch precision 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:** ₩111005
**Availability:** ✅ In Stock

## Summary

> ⌚ Timeless reliability meets modern eco-chic 🌿

## Quick Answers

- **What is this?** 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?** ₩111005 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/678407437-f91w-series-digital-watch-water-resistant-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

- • **Set It and Forget It:** Reliable 7-year battery life means less hassle, more time living your best life.
- • **Eco-Conscious Comfort:** Crafted with bio-based resin for a lightweight, sustainable wrist companion.
- • **Built to Brave the Elements:** Water resistant up to 200 meters—ready for every adventure, rain or shine.
- • **Illuminate Your Day and Night:** LED backlight ensures crystal-clear visibility even in the darkest settings.
- • **Precision Timing at Your Fingertips:** Experience ultra-accurate 1/100 second stopwatch functionality for flawless time tracking.

## Overview

The Casio F91WB-1A is a minimalist digital watch featuring a durable bio-based resin band, 1/100 second stopwatch, LED illumination, and water resistance up to 200 meters. With a remarkable 7-year battery life and essential daily alarm and date functions, it combines classic reliability with sustainable design—perfect for professionals who value function, longevity, and subtle style.

## Description

Buy Casio F-91WB Series | Men's Digital Watch | Environmentally Friendly Bio-Based Resin | Alarm | Date Indicator | 7-Year Battery and other Wrist Watches at desertcart.com. Our wide selection is eligible for free shipping and free returns.

Review: Simple, nice, reliable and comfortable! - I’m very happy with this watch. It is simple, light, and comfortable to wear every day. The time is easy to read and the buttons work well. The battery lasts a long time and the alarm is useful. For the price, the quality is really good. It does exactly what I need. I would recommend it if you want a basic and reliable watch.
Review: A low cost classic - Bought this for a friend. It really is a great watch, if all you want is something on your wrist to reliably keep great time and last forever at a low cost. If you want a piece of jewelry or a status symbol, this isn't it, but if all you want is a watch that serves it basic intended function this one is the gold standard.

## Features

- Constructed with an environmentally friendly (Bio-Based) resin Band
- LCD display comes equipped with an illuminator function to aid visibility in darker environments
- (Up to) 7-Year battery life w/ included CR2016 model battery
- Additional features include an Alarm, Stopwatch (Chronograph), and day-date indicator

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0DDWDKRWT |
| ASIN  | B0DDWDKRWT |
| Age Range Description | Adult |
| Band Color | Black |
| Band Length | 220 Millimeters |
| Band Material Type | Resin |
| Band Width | 20 Millimeters |
| Best Sellers Rank | #653 in Clothing, Shoes & Jewelry ( See Top 100 in Clothing, Shoes & Jewelry ) #1 in Men's Wrist Watches |
| 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 (57,926) |
| Date First Available  | August 21, 2024 |
| Department  | mens |
| 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 |
| Model Name | F-91WB-1A |
| Model Number | F-91WB-1A |
| Package Dimensions  | 5.39 x 4.61 x 2.72 inches; 4.23 ounces |
| Power Source | Battery Powered |
| Shape | Octagonal |
| Sport Type | Walking |
| Strap Type | Two Piece Strap |
| Style Name | Minimalist |
| UPC | 889232378329 |
| Warranty Type | Limited |
| Watch Movement Type | Quartz |
| Water Resistance Depth | 200 Meters |
| Water Resistance Level | Water Resistant |

## Images

![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/51B4HGpwHAL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Simple, nice, reliable and comfortable!
*by L***. on February 3, 2026*

I’m very happy with this watch. It is simple, light, and comfortable to wear every day. The time is easy to read and the buttons work well. The battery lasts a long time and the alarm is useful. For the price, the quality is really good. It does exactly what I need. I would recommend it if you want a basic and reliable watch.

### ⭐⭐⭐⭐⭐ A low cost classic
*by P***X on February 14, 2026*

Bought this for a friend. It really is a great watch, if all you want is something on your wrist to reliably keep great time and last forever at a low cost. If you want a piece of jewelry or a status symbol, this isn't it, but if all you want is a watch that serves it basic intended function this one is the gold standard.

### ⭐⭐⭐⭐⭐ still love them, but mostly I just want a watch ...
*by J***S on October 4, 2016*

I’m over big, bulky watches. I’ve got my Suunto and a couple G-Shock watches. I still wear them, still love them, but mostly I just want a watch that keeps nice, precise time, doesn’t stand out from my wrist 3/4 inch and hopefully looks juuuust a little dorky. I’m also cheap. Waterproofness is important to me. I work a desk job. I commute by bus or train- watches help with that. I like to go on a run a couple times a week and wear a watch. I don’t sleep or shower with my watch on unless I’m camping or in a hotel. I like digital over analog because I kind of like to know exactly what time I think it is and I only ever estimate when I’m reading an analog watch because I’m lazy. Also, when I’m in a meeting or I’ve been pinned-down by someone I don’t want to talk to and I want to know if this really is taking forever or if my perception of the passage of time is just being warped- it’s easier to sneak a peek at a digital watch and get a precise read. I realized a few months ago that I really am just as happy wearing a $15 Casio as I am with my $250 Suunto and that most days I don’t need to know the barometric pressure. Some days, yes. Most days, no. But I like having a variety of watches (including the Suunto, which is fabulous). And I like to choose which watch to wear each morning. That’s fun for me. Recently I got on Amazon and ordered a bunch of new cheap Casio watches. I got four new watches for $52. I think Timex’s are over-priced. That’s how cheap I am. Casio W-800HAV ($20-ish) Digital Black. My eight-year old son and I each got one of these watches for Christmas 2016. We both love it. We both have other watches but wear this one the most. It has a fairly low profile- doesn’t catch on pockets or shirt sleeves. I love the light- it looks stupid, like piddly. But it actually lights the face well. I go jogging at night sometimes. The light works well enough for me to see how slow I am even while I’m bouncing down the road. And it’s got “Dual Display”. I don’t know what else to call that. It shows the time on one part of the screen and at the same time it show the stopwatch numbers. Nice to keep track of both. Or, If I’m out and about, I’ll set a stopwatch when the train goes by because I know that the train comes by every 15 minutes. So I can see when I’m coming up on another 15-minute mark and also see the time on the sub-display. Casio F-201WA ($10.47) Digital Black. Comfortable. Lightweight. Easiest buttons to push. Good light. I like that it has countdown timer and lots of alarms. I miss being able to see the time when it’s in stopwatch mode like I can with the W-800HAV and the WV-200A. Casio WV-200A ($40-ish) Waceceptor Digital Black with chrome and red. Looks good. Like the steel case. Good protection for the glass. Relatively heavy. A liiiiitle too thick. Really nice buttons. Great electro-luminescent light. This one is the only watch of the group that you can set it so it doesn’t beep every time you push a button. I really like being able to turn the beep off. Sometimes I like to set a stopwatch in a meeting so I can see how long somebody is going on with some bullsh*t. Strangely, timing somebody’s bullsh*t is a nice distraction from the bullsh*t. But I don’t like my watch to beep when I’m doing pushing buttons. “Dual display”- you can still see what time it is when you’re in other modes. Countdown timer is nice and many of my other watches don’t have one. I don’t give it extra points for the whole Wave Ceptor thing. Doesn’t add any value for me and it kinda sucks battery. This watch has been on my wrist for a full day of snorkelling and handled it beautifully. I live in a land-locked state, so when I get to the ocean, I’m in the water ALL DAY LONG. I can’t dive deeper than maybe 20 feet, so it’s not a serious test for a watch that says it’s good to 200m. But if you’re diving to 200m and time is critical, you’re going to spring for something more than a $40 Casio. (I love you, Casio). Casio HDA-600 ($14.79) Black Analog. Not the most comfortable. Kinda squeezes my wrist from bone to bone or flops around a bit. I dunno, it just fits weird. YMMV. Love the face protector. Can’t wait until it starts to look a little banged up. Glowy dots on the hands aren’t really impressive. Date window works perfectly. Looks tough but it’s probably not. I like it a lot. Casio MQ24-7B2 ($14-something) White-faced Analog. Incredibly light. Truly forget that you’re wearing it. Easy to read. No date window. No lumi. Nice, simple and never catches your sleeve in a dress shirt. Yes, I’m fancy. Some people are smart enough to read an analog watch that doesn’t have numbers on it- just dots. I’m not one of those people. I screw it up enough when there’s numbers. This has numbers. I like numbers. Haven’t tested this one for waterproofyness. Casio only says it’s water resistant. I hardly ever do underwater demolitions anymore. Casio A168W-1 ($16.15) Stainless Digital. I love / hate this watch. I don’t know if Casio was really trying to make a watch that looks fancy but it’s really a dork-bomb, or if they we’re going for dork-bomb as their aim. Either way. This watch is a stunning success. I think this watch is the pinnacle of nerd-swank. 1980’s wannabe stockbroker, cool old guy who doesn’t give a sh*t, little bit of silver under the sleeve to catch someone’s eye- oh wait it’s a friggin Casio digital. I mean, it’s chrome-plated PLASTIC for crying out loud. How awesome is that? I love all of that. Love it. It’s got the Illuminator light, which works great. Clock, date, stopwatch and alarm. No countdown timer. The metal band is not comfortable. It’s got edges and it pulls on my arm fur. Clasp works great and it’s wicked-easy to adjust. Slips under a dress shirt easily. Again: super-dorky. Makes me smile every time I put it on. Then wince when it pulls the fur. Casio F91W-1 ($11.35) Black Digital. I like this watch a lot. It’s super thin. Very lightweight. The light looks stupid but it works well. The buttons are easy to hit. It ranks pretty high on the ‘Dork’ scale. People recognize it. Hold that one button down and it says CASIo. It’s great. Proud to say I’ve never worn this watch along with flannel and a beanie. Never.

## 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 South Korea*
*Store origin: KR*
*Last updated: 2026-03-05*