Seiko SNE573 Review: What Makes this Solar Diver Stand Out?

I think most people familiar with Seiko are already well-versed in this Japanese watchmaker’s value proposition. This is a brand that has made it their bread-and-butter to create reliable and robust watches with beautiful dials and easy-to-use technology. And of all their collections, the Seiko Prospex line has become their flagship, offering durable diving instruments worthy of both land and water. But when there’s such a large number of models on offer, how do you know where to start?

I’ve been fortunate to get hands-on experience with several Seiko Prospex watches during my life, but I have never had the chance to test out one of their solar-powered models. 

I sometimes forget that Seiko offers solar-powered watches because I’m often so entranced by their in-house mechanical movements, but these designs claim to be equally impressive, requiring no rewinding or battery replacement, powered entirely by natural and artificial light. 

So, when it came to choosing which solar Seiko watch I wanted to test, I went straight for their most classic: the Seiko Prospex Solar Diver SNE573.

About The Seiko SNE573

Why would I choose the Seiko Prospex Solar Diver SNE573 out of them all? Well, a quick look and it’s clear this is a watch that’s going to be easy to wear. 

It’s a classic black dial with a black bezel and stainless steel cased design with fantastic dimensions to suit a vast majority of wrists. It also utilizes one of Seiko’s most used in-house solar-powered movements, the Caliber V147, a movement I’m desperate to see live up to my expectations.

It’s also a watch with plenty of diving capability; it has a 200-meter water resistance, a unidirectional rotating bezel, and Seiko’s glow-in-the-dark Lumibrite across the dial. And yet, despite all this, there’s something beautifully timeless about its execution. 

I wasn’t sure if it was the shape of the steel case or the simplicity of its monochromatic design, but it felt like a watch I could wear just as effortlessly on land as I could in water.

It’s not a brand new watch by any means, having launched in 2021, but the Seiko SNE573 is still a permanent addition to its collection, which, to me, suggests it’s a watch that has proved some level of popularity. 

So, with all these things in mind, I became curious if, when on the wrist, these factors come together to prove the Seiko Prospex Solar Diver SNE573 as one that lives up to the high expectations myself and Seiko have set for themselves.

History of Seiko Solar Dive Watches

Understandably, solar-powered watches haven’t been around for all that long, first introduced during the 1970’s. 

Seiko was one of the first brands to launch their own, with the Seiko 0634-5000 becoming something of a game changer for the industry as it allowed those who frequented the outdoors the convenience of never having to rewind a mechanical movement or swap out the battery for a standard quartz watch. Instead, it harnessed the power of the sun to keep the hands around the dial ticking.

It wasn’t really until the 1990s, however, that Seiko became well-known for their solar watches. It was here when they merged their solar-powered tech with their legendary Prospex line, creating a reliable diving watch with underwater durability and the endless power of sunlight. 

Over the years, their solar dive watches have evolved – but only slightly – to incorporate the latest styles and technology. We’re now seeing more advanced solar movements, increased water-resistant ratings, and updated designs that are both functional and fashionable. The 2021 Seiko SNE573 is one of the same, promising all the essential features you’d want in a solar-powered dive watch.

Seiko SNE573: In-Depth Review

Now it’s time to get hands-on with the Seiko Prospex Solar Diver SNE573. As I mentioned in the introduction, there was a reason I wanted to try this watch specifically. Just from looks, it appears to be an easy-to-wear diver’s model for most occasions. 

Plus, the spec suggests it would be worthy of the wrists of professional divers just as much as those of us simply wanting something robust and water-resistant. But is the design too simple, and does it become boring? And does the tech do what it promises?

Case

One of the issues I’ve had personally with finding a Seiko Prospex watch for myself is case sizing. Typically, Seiko’s diving watches are large, measuring around 41.5mm wide, and even in some cases, the Seiko Tuna, for example, comes in at 48mm. So when Seiko launched the Seiko Prospex Solar Diver SNE573 in 2021 with a mid-size case, I’m guessing it wasn’t just me and my smaller-than-average wrists that were happy.

So, it shouldn’t be surprising that one of the standout features of the Seiko SNE573, for me, is the sizing. Measuring a compact 38.5mm wide and just 10.8mm thick – the latter being something of an unfamiliar sight in dive watches – the watch will quite happily suit almost any wrist size. 

It also has a nice case length of 46.45mm. Upon strapping the model on, I was pleasantly surprised at how easy it was to wear. In fact, I’d go as far as saying it feels smaller on the wrist than what the dimensions suggest. It’s restrained, comfortable, and just looks great.

The watch still wears comfortably despite its well-sized unsigned crown at 3 o’clock, protected by two protruding crown guards, which offers an ISO-certified water resistance of 200 meters. The case also presents flat sapphire crystal glass – a feature that’s nice to see on a watch under $500 – and a screw-down case back decorated with a wave in relief.

Bezel

One of the reasons I think the Seiko Prospex Solar Diver SNE573 watch feels smaller than its 38.5mm width suggests is down to the bezel. Much of the design’s real estate falls to the 120-click bezel. 

Engineered from stainless steel, it is strongly knurled for easy manipulation even while wearing thick diving gloves, and on top, a black bezel insert is added, presenting the 60-minute scale in white.

For those wanting to use the Seiko SNE573 for diving, the bezel is unidirectional, allowing for precise and reliable tracking of elapsed time underwater while preventing accidental adjustments during your dive. 

There’s also a nice pearlescent pip placed on the triangular marker at 12 o’clock for quick reference. The bezel is nicely polished, which adds a nice touch of contrast to the rest of the stainless steel housing, which is predominantly vertically brushed.

Dial

For the dial of the Seiko Prospex Solar Diver SNE573 watch, things are kept unapologetically simple. The surface is made of a classic matte black and set with the classic round, and baton-shaped indices infilled with Seiko’s green-glowing Lumibrite material. 

At 3 o’clock, there’s a cut-out date window with a white backdrop, and at 12 and 6 o’clock, respectively, the Seiko logo is included alongside the Prospex emblem and lettering to showcase its solar capability and 200-meter water resistance.

The handset is typical of many of Seiko’s diver’s watches, offering a skeletonized construction with the broad hours with an arrow tip and the minutes styled in a syringe-like shape. 

Up close, you’ll notice the finishing of the hours and minutes is brushed, creating a subtle bit of contrast to the polished seconds. The seconds has a luminous lollipop counterweight which, like the rest of the hardware, is decorated with Lumibrite.

One might think the dial of the Seiko Prospex Solar Diver SNE573 watch is a little boring, and you wouldn’t be wrong. It is plain, and it is simple, not even including a subtle sunray effect or any contrasting coloring on the seconds hand. 

But, in my personal opinion, it’s one of the reasons why I like this watch so much. It’s unfussy, undeniably legible, and focuses more on its technology than any fanciful dial design.

Movement

As mentioned, the back of the Seiko Prospex Solar Diver SNE573 is kept closed with the iconic wave motif chosen to protect the V147 caliber housed within. It’s an in-house solar-powered movement from Seiko offering classic time and date functionality and an accuracy rated at +/-15 seconds per month or +/- 1 second per day. 

Most of its benefit comes from its ability to fuel itself automatically through solar or artificial light, meaning you never have to worry about battery changes. In bright sunny conditions, the caliber will become fully charged after around 9 hours.

Strap

The Seiko Prospex Solar Diver SNE573 arrives on a comfortable black silicone strap with a small amount of ribbed detail on either side. It’s a nice strap but nothing extraordinary. Thankfully, with a 20mm lug width, this watch can be easily personalized with a variety of other straps to make it your own. 

Like some of the other Prospex Solar Diver watches in the Japanese watch brand’s portfolio, I think this model would look lovely dressed up with a full metal bracelet or even add a bit of color to the monochromatic design with a striped NATO band.

Should You Buy A Seiko SNE573?

If you want a solar-powered dive watch that’s reliable, durable and impressively affordable, then yes, I highly recommend the Seiko Prospex Solar Diver SNE573. Professional divers and military personnel alike will appreciate its robust build and dependable performance. 

I’m neither of those things, and my time with it was immensely enjoyable. I had no issues with accuracy, and I was especially grateful for its sizing. It also feels solid on the wrist, as if no matter what I did or where I went, it would hold up and endure the environment with me.

Seiko SNE573 Pricing & Availability

Seiko doesn’t let us down with the price of the SNE573 either. They continue to maintain their reputation for affordable luxury, retailing the model for $475 on authorized dealers like Exquisite Timepieces. 

It can also be found on the second-hand market for anywhere between $300 and $350 if you’re working with a smaller budget. It’s a non-limited edition and remains a permanent part of Seiko’s collection. However, we can’t say how long that’ll be for.

Seiko SNE573 Alternatives

As I hinted in the introduction, there are several alternatives to the Seiko Prospex Solar Diver SNE573 available in the Japanese watchmaker’s portfolio. If the simple black and steel aesthetic of the SNE573 is a little overdone to you, here are some other models still worthy of your time…

Seiko Prospex SNE575

Still a classic dive watch but with added color and texture for further visual interest, the Seiko Prospex SNE575 is an excellent alternative to the SNE573. This model has been released as part of Seiko’s popular PADI line, a range of watches dedicated to celebrating the official partnership between the Japanese watch brand and PADI (The Professional Association of Diving Instructors). 

This time, the watch’s matte black dial is cleverly etched with the PADI globe logo, while the hour hand and first quarter of the diver’s scale are detailed in the logo’s same blue hue.

Seiko Prospex SNE591

Something of a staple for a diver’s watch – thanks to Rolex and their legendary Pepsi bezel – the Seiko Prospex SNE591 delivers a cool two-toned red and blue diving bezel with beautiful circular finishing. 

To match, the screw-down crown has a red rubber ring for a 200-meter water-resistant rating, sitting at 3 o’clock on the 42.8mm wide stainless steel case. There’s the familiar matte black dial set with Lumibrite, a solid three-row link stainless steel bracelet, and the V157 in-house solar-powered movement.

Seiko Prospex SNE583

If you appreciate all the specs of the Seiko Prospex Solar Diver SNE573 but want something with a dial and bezel color that’s a little more exciting than black, I highly recommend the SNE583. Other than its full metal bracelet, this model offers all the same specs as the model in review here. 

It has a compact 38.5mm stainless steel case, unidirectional rotating bezel, 200-meter water-resistant rating, and the V147 solar-powered movement. The main difference is the dial and bezel, which is colored in a deep emerald green, with a subtle sunray brushed finishing and circular finishing.

Seiko Prospex SNE585

In the exact same collection as the model above, you also have the Seiko Prospex reference SNE585. This time, the sunray brushed dial is colored in a gorgeous royal blue, a color that feels perfectly suited to ocean-based adventures. The bezel follows suit, presenting its 60-minute scale in white on a navy blue backdrop. 

The rest of the specs stay the same; it has a 38.5mm steel case, 200-meter water resistance, sapphire crystal glass, and a screw-in crown. It also arrives on a three-row link solid stainless steel bracelet with a folding buckle and micro-adjustment.  

Seiko Prospex SNE586

Finally, we have the Seiko Prospex SNE586, a slightly dressier take on the compact 38.5mm wide diver’s watch with a rose gold plated case and bezel. But despite its more opulent aesthetic, this is a watch that still upholds Seiko’s high levels of reliability. 

It offers the same sapphire crystal glass, 200-meter water resistance, and a screw-down crown and case back. The dial and bezel insert are done in black for a dramatic level of contrast against the case material, which matches the black silicone strap secured by a rose gold-plated pin buckle.

Conclusion

Some might look at the Seiko Prospex Solar Diver SNE573 and consider it boring, but that’s my favorite thing about it. It’s unfussy and rather than placing too much attention on color or detail, it instead focuses on its functionality to create a watch that is unapologetically robust and reliable. 

Because of its simple design, I think it’s one that could be easily overlooked, but you shouldn’t. In my opinion, the dimensions are perfect – especially if you have wrists between 6 and 7 inches. It’s also not often you’ll find a watch less than $500 with sapphire crystal, ISO-certified 200-meter water resistance, and an innovative solar-powered dial. It’s yet another watch from Seiko I wouldn’t hesitate to recommend.