Casio MDV106 Dive Watch Review: the cheap beater that looks way more expensive than it is

I’ve been wearing the Casio MDV106 (this black dial / green bezel version) as a daily watch for a few weeks now. I bought it because I wanted something I wouldn’t baby, that could handle water, bumps, and general abuse without me worrying about it. I own a couple of nicer automatics, but I hate taking them to the beach or on DIY jobs. This Casio seemed like the classic cheap "beater" everyone talks about, so I gave it a go.

First impression out of the box: it looks better than I expected for the price. The green bezel has a nice pop without looking like a toy, and the dial is very clean. Nothing fancy, but it doesn’t scream "budget" from a distance. On the wrist, it feels like a proper dive watch: 44 mm case, a bit chunky, with some presence. If you’re used to small dress watches, this will feel big.

In daily use, the main thing that stood out for me is how simple and practical it is. You get time, seconds, and a date. No chronograph, no extra sub-dials, nothing to fiddle with. It’s the sort of watch you put on and forget about, which is exactly what I wanted for work, driving, and weekends. I’ve banged it on door frames, worn it in the shower, and used it for swimming at the pool. It hasn’t complained once.

It’s not perfect, though. The stock strap feels cheap, the second hand doesn’t always hit the markers dead-on, and the size will be a problem for smaller wrists. But for the money, it’s hard to be too harsh. If you want a simple, tough, quartz dive-style watch that looks more expensive than it is, this one gets the job done pretty well.

In terms of value for money, this is where the Casio MDV106 really makes sense. You’re getting a 200 m water-resistant watch with a screw-down crown, stainless steel case, rotating bezel, and a reliable quartz movement for a price that’s still very low compared to most dive watches. When you compare it to entry-level mechanical divers from brands like Orient or Seiko, this Casio is often less than half the price. Of course, you’re not getting an automatic movement or sapphire, but if you just want a tough watch that tells time accurately, that trade-off can be worth it.

What surprised me is how often people assume it’s more expensive than it is. I had one friend ask if it was some kind of microbrand diver, and a couple of Amazon reviewers mentioned people confusing it with much pricier watches. It doesn’t feel like a luxury piece in the hand, but on the wrist from a distance, it looks quite respectable. The green bezel in particular gives it a bit of personality. If you put it on a good steel bracelet or a nice rubber strap, it looks even better and easily passes for something in a higher price bracket.

Of course, there are compromises. The stock strap is cheap, the crystal is mineral, the lume is average, and the second hand alignment isn’t perfect. If those things are deal-breakers for you, you’ll need to spend more or look at different models. But for someone who wants a reliable, low-maintenance, go-anywhere watch that they won’t cry over if it gets scratched or lost, this is a strong option.

Overall, I’d say the value is pretty solid, especially if you’re okay with swapping the strap. You get real functionality (200 m WR, screw-down crown), a decent design, and a trusted brand name at a budget price. It’s not the best watch you can buy, but for the money, it’s hard to argue with what you’re getting here.

Design-wise, this MDV106 is very clearly inspired by classic dive watches: big rotating bezel, clear indices, bold hands, and a clean black dial. If you’ve seen a Submariner or similar dive watch, this will feel familiar. Casio didn’t try to reinvent anything here. They went with a proven layout that works: big hour markers, thick hands, and high contrast, so you can read the time quickly. For a watch you’re supposed to use in water or on the move, that’s exactly what you want.

The green bezel is the main visual twist. In photos online it can look a bit toy-like or too bright, but in real life it’s more restrained. It still stands out, though. If you want something discreet under a shirt cuff, this color combo might be a bit much. On weekends or with casual clothes, it looks good. I had a couple of people ask me about it, which never happens with my plain black watches. Some even guessed it was much pricier than it is, which says a lot about how it looks at a glance.

The dial itself is very clean: no busy text, no weird fonts, no overcomplicated logo. You get the Casio logo, water resistance info, and that’s about it. The date window at 3 is small but usable. I do wish the date was a bit larger or had a frame to make it stand out more, but it’s fine. The second hand has a simple lollipop style and sweeps around in one-second ticks like any quartz. On mine, it doesn’t land perfectly on every marker, which might annoy watch nerds. For me, at this price, it’s not a deal-breaker, just something to be aware of.

On the wrist, the 44.2 mm size wears big, especially because the lugs are fairly long and the bezel is wide. On my 7-inch wrist, it looks like a proper chunky diver, which I like. If your wrist is smaller than that, it might overhang or just look oversized. One Amazon reviewer even said they had to return it because it was too big. So if you usually wear 38–40 mm watches, keep that in mind. Design-wise, though, if you like bold dive watches with a bit of color, this one does the job nicely without being overly flashy or covered in fake metal polish.

Casio advertises about a 3-year battery life for the MDV106. I obviously haven’t owned it that long yet, but based on other quartz Casios I’ve had, that estimate is usually in the right ballpark. In practice, this means you’ll probably change the battery every 3–4 years if you’re lucky. For a daily watch, that’s not bad at all. You don’t have to worry about winding it, wearing it every day to keep it running, or putting it on a winder like with automatics.

When the battery does die, you have two options: take it to a watch shop or do it yourself. Because this watch has a screw-down caseback and 200 m water resistance, I’d personally take it to a shop the first time, at least. They can open it, swap the battery, and ideally pressure test it to make sure it still holds its water resistance. If you just crack it open at home with a cheap tool and don’t reseal it properly, you risk losing that water resistance. On a desk diver that never sees more than a sink, maybe that’s fine. But if you actually swim or dive with it, I’d get it done properly.

The good news is that the battery type is common and cheap, and the watch itself isn’t some fragile luxury piece. Any decent watch shop or jeweler should be able to handle it without drama. So over, say, 10 years, you’re probably looking at 2–3 battery changes. Even if each one costs a bit, the total running cost is still low compared to servicing a mechanical diver.

In terms of day-to-day battery behavior, there’s no solar charging or fancy power-saving mode here. It’s just a plain quartz movement running all the time. If you toss it in a drawer for six months, it’ll still be ticking when you pull it out, and that’s honestly one of the big benefits. For someone who rotates watches or doesn’t want to think about winding, the battery setup is simple and practical. Not exciting, but it keeps things easy.

Comfort-wise, my experience was mixed at first. Out of the box, with the stock resin strap, the watch felt a bit awkward on my 7-inch wrist. The strap is quite stiff near the lugs, and the 44.2 mm case plus its lug-to-lug length make it sit large. It didn’t hurt or anything, but it felt like the watch was sitting "on" my wrist rather than wrapping around it. After a few days, the strap softened a bit, but I still wasn’t a big fan.

Once I swapped the strap to a basic NATO and later to a rubber dive-style strap, the comfort improved a lot. With a softer strap that curves around the wrist, the weight is better distributed, and the watch doesn’t feel as top-heavy. The 12.1 mm thickness is reasonable for a diver-style watch, so it’s not a brick, but you will notice it under tighter sleeves or jackets. If you wear long fitted shirts all the time, the watch will probably catch on the cuff now and then.

On hot days, the resin strap is actually not that bad because it doesn’t soak sweat like leather would, and it’s easy to rinse. Still, because it’s quite wide (26 mm at the lugs) and not super soft, it can feel a bit plasticky against the skin. A ventilated rubber or silicone strap with holes or a waffle pattern would be more comfortable for long summer days, especially if you’re active or at the beach.

If you have a smaller wrist, say under 6.75 inches, I’d be careful with this model. One Amazon reviewer with a small wrist said they had to send it back because it just looked and felt too big, even though they really liked the watch itself. So comfort here is strongly tied to wrist size and how much you mind a chunky watch. For medium to larger wrists, with a better strap, it’s comfortable enough to wear all day. Not feather-light, not invisible, but completely manageable for a sport watch.

Materials are pretty straightforward. The case is stainless steel, which is standard and feels solid. The caseback is a screw-down steel back, which helps with the 200 m water resistance. The crystal is mineral glass, not sapphire. That means it’s more prone to scratches than high-end watches, but it’s also cheaper to replace and less brittle than sapphire if you knock it hard. For the price bracket this sits in, mineral glass is normal, so I can’t really complain.

The main weak point in terms of materials is the strap. It’s a resin/plastic band, 26 mm at the lugs, which tapers down a bit. It feels very much like a budget Casio strap: flexible enough, but a bit stiff and not very premium. It’s fine for water use and sweat, and it’s light, but it doesn’t match how nice the watch head itself looks. Several Amazon reviewers said they swapped it for a NATO strap or a steel bracelet, and I did the same after a few days. With a decent rubber or NATO strap, the watch instantly feels more expensive and more comfortable.

The bezel insert is most likely aluminum with paint, not ceramic. That means it can scratch and fade over time, especially if you really abuse it. I haven’t put deep marks on mine yet, but I wouldn’t be shocked to see some wear after a year or two of rough use. On the plus side, the bezel action is decent for this level: it has enough resistance not to spin by accident, and it lines up reasonably well with the 12 o’clock marker on my unit. Again, not luxury level, but usable.

Overall, you can tell Casio put the budget into the important functional bits: steel case, proper screw-down crown and back, and 200 m water resistance. They saved money on the strap and the crystal. For a watch that’s meant to be a daily beater, that trade-off makes sense. If you’re the kind of person who loves premium bracelets and scratch-proof crystals, you’ll find this basic. If you just want something tough enough for everyday abuse and don’t mind swapping the strap, the material choices are pretty reasonable.

Durability was one of the main reasons I bought this watch, and so far it’s holding up well. I’ve worn it for chores, light DIY, and general daily life without being careful. It’s hit door frames, brushed against walls, and spent time in chlorinated pool water and hot showers. The stainless steel case has picked up a couple of light hairline scratches, which is normal, but nothing deep or ugly. The bezel and crystal are still mostly clean after a few weeks of use.

The mineral glass is the part I’m most cautious about. It’s tougher than acrylic but softer than sapphire, so if you’re the type who constantly scrapes your watch on brick walls or metal, you’ll probably get some scratches over time. So far, I’ve only got very light marks that you have to look for under certain light, but I’m not babying it either. If this were a much more expensive watch, I’d be annoyed. On a budget Casio, I can live with it, and worst case, you can get the crystal replaced without breaking the bank.

The stock resin strap is durable in the sense that it won’t rot from water or sweat, but I’ve seen these types of straps eventually crack near the holes or the lugs after a few years. It hasn’t happened yet on this one, but based on other Casio straps I’ve had, I don’t expect it to last forever. That’s another reason I quickly moved to a NATO and a rubber strap. Metal bracelets or good quality rubber will outlast the original strap easily.

The 200 m water resistance and screw-down crown are the big durability plus points here. As long as you don’t open the case yourself and you make sure the crown is screwed down before water exposure, this watch should handle pretty much any normal water situation: showers, pools, snorkeling, maybe light diving. I wouldn’t personally take it on serious deep dives without a pressure test, but for regular users it’s more than enough. Overall, as a daily beater that you don’t have to treat gently, it’s pretty solid. Not indestructible, but definitely tougher than most fashion watches in the same price range.

As a quartz watch, the MDV106 does what it’s supposed to do: it keeps accurate time without fuss. Over a couple of weeks, I didn’t notice any significant drift. You’re talking a few seconds off here and there at most, which is standard quartz behavior. You set it once, and you basically forget about it. For daily use, that’s perfect. I’m not constantly checking it against an atomic clock, but for normal life (work, driving, gym, etc.), it’s more than accurate enough.

The rotating bezel works fine for basic timing. I used it to time cooking, parking meters, and a couple of short swims. The grip is decent, the clicks feel positive, and it doesn’t spin if you bump it lightly. It’s not the smoothest bezel in the world, but again, for this price, it’s perfectly usable. The lume (the glow-in-the-dark paint on the hands and markers) is okay, but not great. It charges up quickly under light and is readable in the dark at first, but it fades faster than on some more expensive dive watches. If you spend a lot of time in dark environments, that’s something to keep in mind.

Water-wise, I’ve used it in the shower and for pool swimming without babying it. No fogging under the glass, no signs of water getting in. The screw-down crown gives some confidence, as long as you remember to actually screw it back in after setting the time or date. This is one of those simple but important habits: if the crown is not fully screwed down, you’re asking for trouble. As a general rule, I don’t operate the crown in water, and that’s what I’d recommend with any watch, including this one.

Overall, in daily performance, the MDV106 is reliable and boring, in a good way. It tells time, takes splashes and swimming, lets you time stuff with the bezel, and doesn’t require constant attention. The only minor annoyance is the second hand not always landing exactly on the indices, which is a common thing with cheaper quartz watches. If that kind of thing drives you crazy, be aware. If you just want a watch that works and doesn’t need coddling, it does the job well.

On paper, the Casio MDV106 is a 44.2 mm quartz dive-style watch with 200 m water resistance, a stainless steel case, mineral glass, screw-down crown and caseback, and a basic resin (plastic) strap. It’s rated to 200 meters, which is proper dive spec for casual users, even if most people will just swim or shower with it. It’s a two-hand analog display with a central seconds hand and a small date window at 3 o’clock. Nothing complicated, which is kind of the point.

The watch runs on a quartz movement with a claimed 3-year battery life. It uses a screw-down crown, which you actually have to unscrew to set the time and date, then screw back in to keep the water resistance. There’s also a unidirectional rotating bezel, so you can time things like dives, cooking, or whatever. The bezel on mine has decent resistance; it doesn’t feel loose or rattly. The crystal is mineral glass, so not as hard as sapphire, but tougher than cheap plastic crystals.

In the hand, it feels solid for something in this price range. The case doesn’t feel hollow, and the weight (around 190 g with everything) gives it a bit of substance on the wrist. It’s not crazy heavy, but you do feel you’re wearing a watch. The dial is black, with white indices and silver/white hands that are easy to read. The green bezel insert is what gives this version its character. It’s not neon, more like a minty or slightly pastel green, which looks better in person than in most product photos.

As for what’s in the box, it’s basic: the watch, the strap already attached, and the battery inside. No fancy packaging, no extra straps, no tools. Just a simple sport watch. Honestly, for this price, I don’t really care about the unboxing experience. I’d rather they put the money into the watch itself, and here, they pretty much did. You’re paying for a no-nonsense tool watch, not an experience with ribbons and foam inserts.