Everyone knows the Casio F-91W. It is the default cheap digital watch, the one with a million YouTube videos and a permanent spot on “best budget watch” lists. But there is a sleeper pick hiding in Casio’s catalogue that fixes almost every complaint people have about the F-91W, and it still costs about thirty bucks.
It is the Casio W800H. Watch the video above to see it on wrist and get the quick version, then read on for the full breakdown.
The top 3 features that matter
1. A 10-year battery. This is the headline act. The W800H runs on a single CR2025 cell rated for approximately 10 years of normal use. You buy this watch, you put it on, and you basically never think about the battery again. For context, the F-91W is rated for 7 years. The W800H gives you three extra years of never opening the case back, which at this price is kind of absurd.
2. Real 100-meter water resistance. The F-91W is water resistant in name only. The W800H is rated to 100 meters (10 BAR), which means swimming, snorkelling, and actual water use without anxiety. This is the feature that turns it from a desk watch into a do-everything watch. If you want one cheap digital you can wear in the pool, this is the one.
3. A bigger, more readable display with dual time. The W800H’s case measures 44.2 x 36.8 x 13.4 mm, noticeably larger than the F-91W, and the digits are bigger and easier to read at a glance. It also has dual time, so you can track a second time zone with a button press. Handy if you travel or call family in another zone.
Full specifications (verified)
Model: Casio W800H-1AV (also listed as W-800H-1AVCF). Module 3092. Battery: CR2025, approx. 10-year life. Water resistance: 100 meters (10 BAR). Case: Resin, 44.2 x 36.8 x 13.4 mm. Weight: 37 g. Band: Resin, fits wrists approx. 145-215 mm. Display: Digital, LED backlight with afterglow. Stopwatch: 1/100-second. Alarm: Multi-function alarm with snooze, hourly time signal. Calendar: Full auto-calendar to year 2099. Timekeeping: 12/24-hour format, dual time. Accuracy: +/-30 seconds per month. Glass: Resin.
What it is like to wear
At 37 grams the W800H disappears on the wrist. The resin case and strap are light and comfortable, and the larger case size means it does not look or feel like a toy the way the F-91W sometimes can on bigger wrists. The LED backlight has an afterglow, so it stays lit briefly after you release the button, which is genuinely useful at night. The buttons are big and easy to press, even with gloves on. Everything about this watch is designed to be used, not admired, and that is the point.
W800H vs F-91W: which cheap Casio should you buy?
Battery: W800H wins (10 years vs 7 years). Water resistance: W800H wins by a mile (100M vs splash-only). Readability: W800H wins (bigger case, bigger digits). Extra features: W800H wins (dual time, afterglow backlight). Size and retro style: F-91W wins (slimmer, more iconic). Price: roughly a tie, both live in the $25-35 range. If you want the classic look, get the F-91W. If you want the more capable watch, get the W800H. For a deeper dive on spotting genuine F-91Ws, see our guide on how to spot a fake Casio F-91W.
Who should buy it
Anyone who wants a true beater watch for swimming, travel, or rough use. F-91W owners who want the same idea with real water resistance and a bigger display. Anyone who hates changing watch batteries (10 years is 10 years).
Who should skip it
If you want a slim, retro look, the F-91W still wins on style. If you need smart features, look elsewhere. This is a dumb watch in the best possible way. Resin glass scratches. It is cheap to live with, not precious.
Price and where to buy
The W800H typically sells for around $25 to $35 USD (about $45 CAD in Canada), which puts it in impulse-buy territory. At that price, the 10-year battery alone makes the math work.
Check the current price on Amazon: Casio W800H-1AV on Amazon
Verdict
The Casio W800H is the best cheap digital watch most people have never heard of. It takes everything good about the F-91W formula, adds real 100-meter water resistance, a bigger readable display, dual time, and a 10-year battery, and still costs about thirty dollars. If you only buy one budget Casio, make a serious case for this one.
Specs verified against Casio dealer listings and the Amazon product page (ASIN B001AWZDA4). Prices move around, so check the link above for the current number.