Side-by-side comparison of specifications and features
Compare visual case presence and physical footprint on one shared wrist. Measure your top-down wrist width for a stronger result; lug-to-lug is used when the catalog has it.
Medium (6.7″)
Estimated top width: 56.7 mm
Preliminary range: 54.7–61.8 mm.
Watch A
Visual presence
ModerateCase covers 68% of your modeled wrist width.
Physical footprint
Clear spaceEstimated clearance: 5.1 mm per side.
Watch B
Visual presence
ModerateCase covers 65% of your modeled wrist width.
Physical footprint
Clear spaceEstimated clearance: 7.1 mm per side.
Proportional guide only: visual presence and physical footprint do not predict comfort. Weight, thickness, caseback shape, rigid lugs, strap stiffness, wrist-bone prominence, wearing tension, bezel design, and case curvature change how a watch actually wears.
Start with the specifications that meaningfully differ. Expand the complete table for reference details and missing-data context.
| Specification | Seiko Prospex | Seiko Solar |
|---|---|---|
| Pricing | ||
| MSRPProspex is $125 less at MSRP | $350 | $475 |
| New PriceSolar is $184.3 less based on the current snapshot | $570 | $386 |
| Used Price (Low)Prospex is $113.8 less at the low end | $272 | $386 |
| Used Price (High) | $1,995 | $855 |
| 30-Day Trend | ↓ -24.9% | ↓ -27.4% |
| Used Price Range | $272 - $1,995 | $386 - $855 |
| Identity | ||
| Style | Diver, Tool | Diver, Sports, Tool |
| Dimensions | ||
| DiameterSolar is 1.5mm smaller | 38.5mm | 37mm |
1 field is excluded from the differences view because one watch lacks comparable data. Use “All specs” to inspect those gaps.
If you are deciding between Seiko Prospex SNE573 (solar diver) and Seiko Solar SNE529, the real decision is usually about wrist presence versus easier fit. Start with fit first — case width and lug-to-lug usually matter more than secondary features if wrist comfort is a concern.
Bottom line
Fit is a real separator here — compare case width and lug-to-lug before deciding, especially if wrist comfort matters more than headline features. Choose Seiko Prospex SNE573 (solar diver) if you want the lower price — Seiko Prospex SNE573 (solar diver) typically runs about $36 less; choose Seiko Solar SNE529 if you prefer how Seiko Solar SNE529 looks — on the specs we hold, nothing separates these two functionally.
Choose Seiko Prospex SNE573 (solar diver) when
Seiko Prospex SNE573 (solar diver) is a better fit for low-maintenance daily wear, diver styling.
Choose Seiko Solar SNE529 when
Seiko Solar SNE529 is a better fit for low-maintenance daily wear, diver styling.
Movement and upkeep
Seiko Prospex SNE573 (solar diver): solar movement
Seiko Solar SNE529: solar movement
Both use the same movement type, so maintenance differences are limited and fit or feature details should decide the purchase.
Size and wearability
Seiko Prospex SNE573 (solar diver): 38.5mm · L2L 46.5mm
Seiko Solar SNE529: 37mm
Fit is a real separator here — compare case width and lug-to-lug before deciding, especially if wrist comfort matters more than headline features.
Water resistance
Seiko Prospex SNE573 (solar diver): 200m
Seiko Solar SNE529: 200m
Water resistance is similar on paper, so focus on fit, features, and price instead.
Price and value
Seiko Prospex SNE573 (solar diver): $350
Seiko Solar SNE529: $386
These two often land in a similar price band — which usually means fit, features, and current deal quality matter more than the sticker price.
Style and use case
Seiko Prospex SNE573 (solar diver): diver
Seiko Solar SNE529: diver
Both lean into a similar diver use case — the choice is more about fit, features, and price than category.
Crystal and materials
Seiko Prospex SNE573 (solar diver): sapphire crystal · steel
Seiko Solar SNE529: sapphire crystal · steel
Materials are broadly similar, so finish, fit, and price will matter more than the materials list alone.
Seiko Prospex SNE573 (solar diver) and Seiko Solar SNE529 get compared constantly because both are diver/tool watches, they are within 1.5mm of each other in case width, they share the same solar movement — so the spec sheet alone will not tell you which to buy.
Seiko Prospex SNE573 (solar diver) for most buyers — Seiko Prospex SNE573 (solar diver) is around $350 and Seiko Solar SNE529 around $386 — about a $36 gap at typical listings.
Seiko Prospex SNE573 (solar diver) usually offers the lower entry price — confirm current listings because marketplace pricing can move quickly.
These two often land in a similar price band — which usually means fit, features, and current deal quality matter more than the sticker price.
Check current deals on Amazon and eBay using the buttons below — listing prices, seller quality, and condition can change quickly.
Prices change often, so compare the latest listings and condition options before you buy.
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Seiko Prospex
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Seiko Solar
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Neither is clearly smaller: case width is 38.5mm vs 37mm. Pick on strap and looks instead — the size difference is not what will decide this for you.
They are rated the same, so water resistance will not decide this. Choose on strap material and how much you mind scratching the case.
Seiko Prospex SNE573 (solar diver) is the value pick at roughly $36 less. Pay more only if a specific difference above matters to you — otherwise the cheaper one is the smarter buy. Confirm live listings, since marketplace pricing moves.
Seiko Prospex SNE573 (solar diver) is around $350 and Seiko Solar SNE529 around $386 — about a $36 gap at typical listings. That is the difference you will notice day to day; the rest of the specs are close enough not to matter.
Seiko Prospex SNE573 (solar diver) for most buyers — Seiko Prospex SNE573 (solar diver) is around $350 and Seiko Solar SNE529 around $386 — about a $36 gap at typical listings.
Evidence & Method
This page currently relies on normalized catalog fields and calculated differences. No external reviewer observation is used in its verdict.
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