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⏳ Timeless precision meets modern hustle—wear the watch that works as hard as you do.
The Casio F-105W-1A is a unisex digital quartz watch featuring a 1/100 second stopwatch, EL backlight for easy reading in the dark, a daily alarm, and water resistance. Lightweight and durable with a resin strap, it offers reliable accuracy within +/-30 seconds per month, making it a practical yet stylish choice for professionals who demand precision and functionality.

| Asin | B000GB1RAU |
| Batteries | 1 Lithium Metal batteries required. |
| Best Sellers Rank | 1,520 in Men's Wrist Watches |
| Country Of Origin | USA |
| Date First Available | 21 Oct. 2010 |
| Department | men |
| Is Discontinued By Manufacturer | No |
| Item Model Number | F105W-1OS |
| Manufacturer | Casio |
| Product Dimensions | 11.81 x 8 x 5.59 cm; 21 g |
User
Improves on the Classic F91w...If you have an average wrist size or under...
The F105w is an improvement on the classic Casio F91w in one main way. The backlight. The F91w backlight is renowned for being awful, and is barely functional. This model adds a blue backlight which is superb and lights up clearly at night. The display is legible and in all other ways the watch is identical to the F91w in terms of features. Whether or not you consider the look of the watch to be an improvement on the F91w (ie. more blue on the face and the word Illuminator on it) will be down to your personal preference. They both look great in my opinion.This watch cannot be faulted in terms of styling and features for the price. I don't wear it often any more as I do not think it is suited to those with above average wrists (7 inches+). They are retro watches and back in the 80s watches were not the giant dinner plates that seem in fashion today, but even so, I feel that those with larger wrists will struggle to pull this one off as it will feel too small and dinky when worn.
User
Better than F-91w
Like the F-91w but with a better back light and sits flatter on the wrist without moving about (which i found with the F-91w). Recommend this watch as a cheap beater.
User
Top quality.
Quality watch, love the EL back light. Looks retro. Minimal features, just like the F91W. Small size but comfortable.
User
Great
Great
User
Great watch with everything you need to tell the time
It tells the time and doesn't break when it drizzles. What's not to like?!I had one of these as a kid, and I'm really stoked to have one again now. For the price, it can't be beaten, and these days carries a certain amount extra something, maybe down to the nostalgia value.TBH though, what more do you really want from a watch? Yes, the water resistance could be higher grade, but for the money it's perfect.
User
Good product (will publish review after some time of use)
Original product and can see Casio written for authenticity. Over all good product
User
Be illuminated!
I’m a huge fan of the iconic f91w. I have many of them in most of the colours. But we all know the light is feeble. There, I’ve said it. We all feel better for admitting it. But wait! There’s good news! The f105 is a f91w with a far superior light! Casio fixed the one flaw of their classic. It even has the same strap!Buy one, be illuminated!
User
Awesome backlight
Great casio especially the back light. Get it before Casio discontinue this model.
User
Reliable as always
It is slightly thicker than the F91W, but light functionality is way better.
User
Le prix
Pour sont efficacité. Par habitude. Et pour sont efficacité. Je le recommande vivement
User
Bueno, bonito y barato.
Excelente reloj. La calidad es muy buena y sus funciones son muy útiles, ademas destaca del Casio f-91w por mejorar la iluminación. Todo esto a un precio muy accesible, ademas es muy versátil con correas nato. Este es el segundo que poseo, el primero duro conmigo al rededor de una decada (hasta que lo perdi) y ya era usado, ojala este me dure mucho también.
User
Best simple digital watch ever! Takes a licking & keeps on kicking!
Love this watch. Have been wearing this model since the 1980s. Sturdy, functional, reliable, accurate & lasts for years & years. Easy to use and set up the date, time, stop watch, timer and alarm. All functions work as they should. Choice of on the hour reminder chime, 12 or 24 hour display and the alarm beeps gradually accend in volume, gently waking the wearer without disturbing those nearby who want to keep sleeping.The back light dims out after several years. The watches themselves have never cracked or broken. Rough on watches. One was replaced when lens became cloudy, covered in an accumulation over time of tiny scratches from repeated contact with rough surface . Another replacedment was bc one of the holes where the bar for the watch strap sits became enlarged & would not hold bar any longer after the strap got hung up & thankfully pop the bar out, saving my wrist. The strap has hung up before, breaking the strap instead of popping out the bar. I'm not 100%sure but I think it was a newer replacement watch band that pulled the bar outBattery & strap sre simple to replace.Oh and this watch can handle being caked with mud, paint, dust, sand, etc..., covered in shampoos, lotions, etc.., and even sprayed with cleaning liquids (bleach, white vinegar, rubbing alcohol, hydrogen peroxide, and moreNever take it off, except to clean it or . It's waterproof in the pool, tub, shower, lake & ocean snorkeling & even held up on a 30 min. shallow scuba dive average depth 20ft.Ladies, if you like simple, practical, watches, but find ladies' digital watches too small and men's either too big and thick check this watch out. I don't even notice I'm wearing it. It doesn't catch on clothing or anything except for when overcome by an occasionsl knucklehead moment and move too fast before looking. Correction. When it's really cold and multiple long sleeve layers are wrapped in sleeves with elastic wrist cuffs,adjust xthe watch location for comfort.and move move way too fast farms, in the barns, corals, pastures and pensBest simple digital watch, ever.
User
A better F-91W with improved lighting
I've used a F-91W for quite a long time and just couldn't bear with the horrible lighting on the original and that's when I've found the F-105W. Feature wise, it's nearly completely identical to the F-91W but with an extra "SPLIT" segment for stopwatch and an EL backlight that is much better than the original's single LED. The case is however slightly thicker than the F-91W but otherwise very negliable. The straps are still however it's weakness just like the F-91W but you can replace the original straps with something like NATO.
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