--- product_id: 206145902 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: "198.88 DT" currency: TND in_stock: true reviews_count: 13 url: https://www.desertcart.tn/products/206145902-f91w-series-digital-watch-water-resistant-led-light-1-100 store_origin: TN region: Tunisia --- # Water resistant for daily wear 7-year long-lasting battery 1/100-sec precision stopwatch 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:** 198.88 DT **Availability:** ✅ In Stock ## Summary > ⌚ Own a legend that never quits — style, precision, and reliability in one sleek package! ## 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?** 198.88 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/206145902-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 - • **Precision Stopwatch:** 1/100-second split timing perfect for workouts and daily tasks. - • **All-Day Practicality:** Daily alarm, hourly chime, auto-calendar & LED backlight keep you on schedule. - • **Featherlight Comfort:** Ultra-slim 21g resin case that you barely feel on your wrist. - • **Customizable & Durable:** 7-year battery life with standard 18mm lug width for endless strap options. - • **Iconic Timeless Design:** A cult classic since 1989, worn by 100M+ worldwide. ## Overview The F91W Series digital watch is a globally beloved timepiece known for its iconic design, featherlight resin build, and robust 7-year battery life. Featuring a precise 1/100-second stopwatch, water resistance, daily alarm, and LED backlight, it combines timeless style with practical functions. With over 100 million units sold since 1989, it remains the world’s most popular digital watch, perfect for professionals seeking affordable reliability and customizable comfort. ## Features - AN ICON SINCE 1989 — THE WORLD'S MOST POPULAR DIGITAL WATCH — Introduced in June 1989 as a successor to the F-87W, the F-91W is popular for its low price, long battery life, and iconic design. As of 2026, production of the watch has reached 100 million units, making it the most sold watch in the world. A timeless design, unchanged since launch, that has earned a global cult following across generations. - FEATHERLIGHT & SLIM — Urethane resin is employed for the case and band, and the module features a reduced number of components — every element of construction was reconsidered to secure high quality at an affordable price, resulting in a global hit watch that offers both affordability and long-lasting reliability. The case measures 38.2 × 35.2 × 8.5mm and weighs just 21 grams — barely noticeable on the wrist. - 1/100-SECOND STOPWATCH WITH SPLIT TIME — The 1/100-second stopwatch covers elapsed time, split time, and 1st-2nd place timing up to 59'59.99" — precise enough for sports, training, cooking, and any timed activity. Handy features for day-to-day life also include a daily alarm, water resistance, and LED light functions. - DAILY ALARM | HOURLY CHIME | AUTO-CALENDAR | LED LIGHT — Module 593 delivers functions for a daily alarm, chronograph/stopwatch, annual calendar, and hourly chime, with selectable 12 or 24-hour format. The auto-calendar and LED backlight round out a complete, practical feature set in a package that fits any wrist from 145 to 200mm. - 7-YEAR BATTERY | MODULE 593 | 18MM LUG WIDTH — Powered by a CR2016 battery with an approximate 7-year life — often lasting 10 or more years in practice. The F-91W has an 18mm lug width, meaning standard 18mm NATO straps fit directly without any modification — making it one of the most customizable and mod-friendly watches available at any price point. ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B086RNZX13 | | Batteries | 1 Lithium Metal batteries required. (included) | | Best Sellers Rank | #1 in Men's Wrist Watches | | Date First Available | April 3, 2020 | | Department | Unisex | | Item Model Number | 611081 | | Manufacturer | VLC Distribution | | Product Dimensions | 6 x 6 x 4 inches; 2.72 ounces | ## 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/51bVWWw7yuL.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 ### ⭐⭐⭐⭐⭐ So far, so durable! *by on Reviewed in the United States August 2, 2026* It’s technically not rated for swimming- just splash proof, but I took it to typhoon lagoon, open to close, in the lazy river for hours, on multiple rides, and it kept ticking! Obviously take it swimming at your own risk but for $34 this is an epic watch!Casios are always pretty good quality even at their cheapest so I feel like this reflects that, it may not be rated for swimming but I do believe it was tested to far exceed only splash resistance. ### ⭐⭐⭐⭐⭐ Casio never disappoints *by on Reviewed in the United States July 5, 2026* Lightweight, practical, great quality with retro vibes Just what I needed for a recent trip that required keeping tract of the new time zone during flight. For instructions on how to use, I just found a YT video, instead of reading the smaller print. I have not had it long enough to have an opinion about battery life. ### ⭐⭐⭐⭐⭐ What else to ask for $30? *by on Reviewed in the United States July 11, 2026* This watch has been around longer than many people reviewing this watch speaks for the status of itself.It works, it looks good, it's cheap, it's the watch millions of people and millionaires can wear and it will never be obsolete.5/5, highly recommended. ## 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 A158WA Series | Unisex Digital Watch | Vintage | WR | 100 SEC Stop Watch | Daily Alarm | Regular Time Keeping: Hour, Minute, Second, PM, Date, Day | Led Light | 7 Yr Battery --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/206145902-f91w-series-digital-watch-water-resistant-led-light-1-100](https://www.desertcart.tn/products/206145902-f91w-series-digital-watch-water-resistant-led-light-1-100) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-08-15*