Is a $40 Digital Watch Actually Better Than a $20 Casio? F-91W vs. Elektronika 55B

Cheap digital watches are where watch collecting gets a little weird (in a good way). We can spend hours debating whether a watch is worth another $50, then happily strap on something that costs next to nothing because it has the kind of personality that makes us want to wear it. That’s what makes the Casio F-91W and KommandoStore Elektronika 55B worth putting head-to-head. One makes a strong case for spending less; the other asks whether paying more for a cheap digital watch adds enough enjoyment to matter. How does the Casio F-91W compare with the KommandoStore Elektronika 55B, and which cheap digital watch gives you the better combination of usability, features, and personality for the money?

We’ve been wearing, testing, and reviewing watches hands-on for more than a decade, and that’s given us plenty of opportunities to learn that the cheapest watch isn’t always the one that feels like the best deal—and the watch with more going on isn’t automatically the more satisfying one either. What matters is what keeps earning wrist time once the initial novelty wears off. So we’re looking at these two the way we’d assess them with our own money: where each one delivers, where each one gets frustrating, and whether the extra spend on the Elektronika 55B actually buys a better experience than the F-91W.

Overview and Identity

The Casio F-91W has a funny way of messing with the collecting brain. The point isn’t that this is some overlooked bargain waiting for a watch nerd to discover it—quite the opposite. With an estimated three million units produced every year, it’s so ubiquitous that most of us have probably handled one already. What changed was spending proper wrist time with it and realizing how refreshing that basic, functional, accurate experience can be. Throughout our testing period, we had grown less interested in what a watch signals to other people and more interested in watches that brought us back to why we started collecting in the first place. The F-91W fits that mood almost perfectly, and at its price, there isn’t much financial risk in finding out whether it does the same for you.

The Elektronika 55B comes into the comparison from a different angle. It’s a design we admired without ever feeling compelled to hunt down an original, and our experience with Soviet watches had mostly stayed on the mechanical side. Here, the appeal is getting that old-school electronic-watch flavor without starting with an aging original and wondering how much life its electronics have left. The modern 55B also has enough personality to make it more than a historical exercise, especially in the display graphics and melodies that gave us more reasons to interact with it during hands-on testing. It occupies a more playful corner of the affordable-watch world, which makes the extra money over the Casio an interesting question rather than an automatic upgrade.

• The Casio F-91W is the reset button: ubiquitous, inexpensive, and unexpectedly good at reminding us that a watch can be satisfying without feeding the collector mindset.
• The KommandoStore Elektronika 55B is the playful detour: an accessible way into an unusual electronic-watch design, with enough personality to make the experience feel like more than simply telling time.

Dial, Strap/Bracelet & Wearability: Familiar Simplicity vs Quirky Digital Charm

The Casio F-91W’s LCD is surprisingly easy to read for such a small watch, and it packs plenty of information in without making us work to decipher it. The two color versions also show how much personality Casio can squeeze out of the same basic layout, with the green-and-orange model getting more wrist time. Small arrows and labels around the case correspond to the buttons, too, so there’s little mystery when we want to access a function. It’s a simple design choice that makes the watch feel intuitive rather than merely familiar.

The integrated resin strap follows the same no-nonsense philosophy. It’s soft and comfortable, with a plastic buckle, minimal branding, and enough adjustment holes for a good fit without much fuss; the lightweight construction suits the watch better than anything overbuilt would. We also found plenty of room to play with aftermarket options, including the popular NATO swap. The F-91W doesn’t need a strap change to be wearable, though; its stock setup already does the job, which is part of what makes this little Casio so easy to keep reaching for. 

The Elektronika 55B takes a less restrained approach to the display. Its reverse LCD is easy enough to read indoors, and during our review, we never found ourselves fighting to see the time, although direct sunlight does reduce the contrast somewhat. More importantly, the display is surrounded by crisp printed iconography that repeatedly caught our attention. Those graphics do a lot of the visual heavy lifting, giving the watch a distinctive look without relying on added decoration. It’s one of those details that makes us look at the watch for reasons beyond checking the time.

The bracelet reinforces that character rather than trying to disguise it. It’s light and a little jangly, which feels appropriate for a watch drawing from this era, and it stayed comfortable throughout our review without pulling at arm hair. We also liked that you can adjust it without removing links, while the 18mm lug spacing leaves plenty of scope for aftermarket straps. Even so, we never felt the need to change it. We prefer the stainless-steel version over the gold-tone treatment, largely because the plain steel keeps the whole thing feeling more convincing. 

• The Casio F-91W is the easier choice for quick readability, intuitive controls, and a soft strap that gets out of the way while leaving room for easy customization.
• The KommandoStore Elektronika 55B gives us more to look at and interact with, with its reverse display, crisp surrounding graphics, and deliberately lightweight, slightly jangly bracelet making the original setup part of its appeal.

Build Quality & Technical Approach

Both the Casio F-91W and KommandoStore Elektronika 55B take the cheap digital-watch formula seriously, but they have very different ideas about where the money should go. That makes this less about which one has the longer feature list and more about whether we’d rather have a watch that quietly gets the job done or one that gives us a few more reasons to poke at the buttons.

Movements:

The Casio F-91W runs on Module 593, and this is where the watch’s straightforward approach pays off. It covers the useful stuff—daily alarm, stopwatch, annual calendar, hourly chime, and 12/24-hour time—with controls that we found easier to navigate than plenty of other digital watches. Casio rates the quartz accuracy at ±30 seconds per month, though our experience suggests that’s a conservative figure. Power comes from a CR2016 3-volt lithium battery, so there’s little reason to spend much time worrying about keeping the thing alive. There’s even a “CA510” Easter egg that appears when we hold down the lower-right button. Apparently, someone is out there making fake F-91Ws.

The Elektronika 55B keeps its movement details somewhat close to the vest. KommandoStore calls the module proprietary but doesn’t explain what that means or how much of the original experience it had to recreate. In use, though, the watch gave us no performance complaints, and the usual alarm, timer, stopwatch, and perpetual calendar functions are all accounted for. The learning curve comes from the controls, not the feature set. Anyone used to Casio’s button logic may need some rewiring before the menus become second nature, though KommandoStore’s walkthrough makes the process much less painful. The module could use more explanation, but once we learn its language, the watch does what it needs to do.

Case Construction & Finishing:

The Casio F-91W is unapologetically resin, and yes, it feels like plastic because it is plastic. That is also why the whole thing is so easy to forget on the wrist, especially with the matching resin strap bringing the weight down to just 20.5g in our testing. At roughly 34mm across, it is small by modern standards, but the slightly flared resin bumpers at each corner give the case enough visual bulk that it doesn’t look completely lost. Those bumpers also frame the three buttons, making them easy to press with confidence. The stainless-steel caseback and basic screw construction are about as glamorous as a filing cabinet, but at this price, that stripped-back approach makes sense.

The Elektronika 55B follows a similar compact formula but feels more substantial thanks to its stainless-steel case. At 35mm wide and 38mm lug-to-lug, it stays close to the proportions of the vintage watches that inspired it, and anyone familiar with the F-91W or A158W should find the size immediately approachable. During our testing period, its thin profile made it practically disappear on the wrist, while the restrained finishing helped preserve that old-school electronic-watch feel. There’s no attempt to polish the case into the star of the show, and that restraint works; the watch feels closer to something pulled from a display case decades ago than a modern product trying too hard to look retro.

Crystals:

The Casio F-91W keeps the crystal as basic as the rest of the watch. Casio lists the material as resin, so this isn’t a watch where we get sapphire and then pretend the price tag made the omission mysterious. In practice, the crystal fits the F-91W’s whole disposable-in-the-best-way personality: lightweight, simple, and inexpensive enough that we don’t feel the need to baby it.

The KommandoStore Elektronika 55B is less specific about what’s covering the display. Its primary specifications don’t clearly identify the crystal material as mineral or acrylic, so we wouldn’t invent a material here just to make the comparison look tidier. On a digital watch, the real test is whether we can glance down and get the time without squinting as we’ve suddenly misplaced our glasses. The 55B passes that test.

Water Resistance & Lume:

The Casio F-91W is generally understood to carry around 30 meters of water resistance, although Casio isn’t especially consistent about specifying the rating across every version. We wouldn’t treat that as an invitation to go swimming, but casual exposure to rain, splashes, or washing our hands is hardly a crisis. Enough F-91W torture tests float around online to suggest the watch can take more abuse than its rating implies, though we’d still stick to the rating rather than volunteer ours for science. For low-light use, the single green LED is more functional than impressive, lighting up the display, or more accurately, one corner of it. It works well enough to check the time and operate the modes, but this is no Indiglo situation.

The Elektronika 55B is similarly rated at 30 meters, which puts it firmly in the splash, rain, and hand-washing camp rather than the swimming pool. That’s enough for normal daily mishaps, but we wouldn’t treat the rating as permission to recreate the F-91W torture-test videos. The display is reasonably readable, and the backlight proved useful when the surrounding light wasn’t cooperating. It’s a small practical advantage rather than a headline feature, but on a watch this compact, being able to read it in the dark is exactly the sort of thing we appreciate.

• Casio F-91W: Wins on simplicity, with an easier interface, lighter resin construction, and a quartz module that needs little attention. Its basic crystal, LED, and 30m water resistance keep the package firmly utilitarian.
• KommandoStore Elektronika 55B: Trades some Casio-like familiarity for stainless-steel construction, a more distinctive digital experience, and a menu system that takes time to learn. Its 30m rating keeps water use similarly limited, while the crystal specification is less clear.

Cost Considerations

The Casio F-91W remains the easier financial decision. Casio’s official store lists the standard F-91W-1 at $29.95, but we’ve generally seen these available around $15–$20. At that level, there’s almost no pressure to justify the purchase, and that low entry price changes the experience from ironic impulse buy to something closer to uncomplicated watch enthusiasm. With other colorways available too, the F-91W makes a remarkably accessible case for spending less and enjoying the watch more.

The KommandoStore Elektronika 55B sits around $40, so it costs more without moving into remotely serious-money territory. That difference makes more sense if you already have the usual Casio classics and want something that scratches a different itch. It won’t win over anyone who expects a bracelet to feel substantial, but its lightweight, vintage character is part of what makes it enjoyable. After wearing it, we came away impressed that KommandoStore kept the recreation approachable while preserving the oddball appeal that made the experience so much fun.

Final Thoughts: Which Cheap Digital Watch Gives You More for Your Money?

After wearing both, we’d give the Casio F-91W the nod for overall value. The Elektronika 55B is the more unusual watch, and that matters, but the extra $20–$25 doesn’t buy a proportionally better watch. It buys a different kind of fun. The F-91W already gets so much right at its price that the Elektronika has a tougher job than simply being “more interesting” to justify its higher price.

That makes the F-91W our pick for anyone who wants the most watch for the least money. There’s a reason this thing keeps sneaking into collections that already contain watches costing hundreds or thousands more. It doesn’t ask us to admire it, explain it, or protect it from the outside world. We can wear it because we like it, and that’s a pretty healthy place for a watch to sit in a collection. The Elektronika 55B has more of that “look what this thing does” factor, which makes it a stronger choice for collectors who enjoy oddball electronics and want their inexpensive watches to give them something to fiddle with.

So, does the extra spend on the Elektronika 55B buy a better experience? For us, no. It buys a more distinctive one. That distinction matters. Pick the F-91W when you want the smarter buy and don’t need your cheap digital watch to entertain you. Pick the Elektronika 55B when the offbeat factor is part of the appeal, and you’re happy to spend a little more for it.