Watch A
Seiko 5
Round · 37mm · 42.9mm lug-to-lug
Optimal proportions for most wrists
Case: 37mmLug-to-lug: 42.9mmLug width: 18mmThickness: 11mm
Open this size in the full fit chart →Seiko 5 vs Seiko 5 Sports SRPD55
Side-by-side comparison of specifications and features
Key Differences
Best Value
Seiko 5 (Ref. SNK809 · Unisex)
Starting from $75
Best Water Resistance
Seiko 5 Sports (Ref. SRPD55)
100m (3x more)
Slimmest
Seiko 5 (Ref. SNK809 · Unisex)
11mm thick
See Both Watches on Your Wrist
Set your wrist circumference to compare relative case presence. Lug-to-lug is included when the catalog has it.
Medium (6.7″)
Balanced
Watch B
Seiko 5 Sports SRPD55
Round · 42.5mm · 46mm lug-to-lug
Optimal proportions for most wrists
Case: 42.5mmLug-to-lug: 46mmLug width: 22mmThickness: 13.4mm
Open this size in the full fit chart →Proportional guide only: wrist shape, strap articulation, bezel design, and case curvature change how a watch actually wears.
Price Comparison
Seiko 5
MSRP
$75
Used
$100
Seiko 5 Sports
MSRP
$350
New
$350
Used
$224
MSRP New (Amazon) Used (eBay)
Side-by-Side Specs
Start with the specifications that meaningfully differ. Expand the complete table for reference details and missing-data context.
| Specification | Seiko 5 | Seiko 5 Sports |
|---|---|---|
| Pricing | ||
| MSRP5 is $275 less at MSRP | $75 | $350 |
| Used Price (Low)5 is $124 less at the low end | $100 | $224 |
| Used Price (High) | $3,554 | $635 |
| 30-Day Trend | 0.0% | ↑ +9.5% |
| Used Price Range | $100 - $3,554 | $224 - $635 |
| Identity | ||
| Style | Field, Casual | Diver, Casual |
| Dimensions | ||
| Diameter5 is 5.5mm smaller | 37mm | 42.5mm |
| Thickness5 is 2.4mm thinner | 11mm | 13.4mm |
| Lug Width | 18mm | 22mm |
| Lug to Lug | 42.9mm | 46mm |
| Case | ||
| Water Resistance5 Sports adds 70m water resistance | 30m (splash resistant) | 100m (recreational diving) |
| Bezel | Fixed | Unidirectional rotating |
5 specifications both watches share
MovementAutomatic
Case MaterialStainless Steel
CrystalHardlex
Dial ColorBlack
Luminous✓ Included
2 fields are excluded from the differences view because one watch lacks comparable data. Use “All specs” to inspect those gaps.
Which Should You Buy?
Seiko 5 and Seiko 5 Sports SRPD55 can overlap on price or use case, but the buying decision usually comes down to wrist presence versus easier fit, water-ready utility versus dressier everyday wear, field character versus diver versatility. 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 5 if you want a smaller case footprint on the wrist; choose Seiko 5 Sports SRPD55 if you prefer more dial presence and a larger case feel.
Choose Seiko 5 when
Seiko 5 is a better fit for smaller wrists, mechanical-watch enthusiasts, field styling.
Choose Seiko 5 Sports SRPD55 when
Seiko 5 Sports SRPD55 is a better fit for buyers who want more wrist presence, mechanical-watch enthusiasts, diver styling.
Key Differences
Movement and upkeep
Seiko 5: automatic movement
Seiko 5 Sports SRPD55: automatic 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 5: 37mm · L2L 42.9mm · 60g
Seiko 5 Sports SRPD55: 42.5mm · L2L 46mm
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 5: 30m
Seiko 5 Sports SRPD55: 100m
Water resistance is a meaningful separator here — the higher-rated option gives more flexibility for swimming or rougher daily use.
Price and value
Seiko 5: $75
Seiko 5 Sports SRPD55: $350
There is a real price gap here — treat the more expensive option as an upgrade decision and confirm whether the extra spend buys something you will notice in weekly use.
Style and use case
Seiko 5: field
Seiko 5 Sports SRPD55: diver
Seiko 5 leans more field, while Seiko 5 Sports SRPD55 pulls toward diver use case — pick the one that matches how you will actually wear it.
Crystal and materials
Seiko 5: Hardlex crystal · steel
Seiko 5 Sports SRPD55: Hardlex crystal · steel
Materials are broadly similar, so finish, fit, and price will matter more than the materials list alone.
Choose Seiko 5 If...
- You want a smaller case footprint on the wrist.
- You are specifically shopping for a field style watch.
- You want the lower current entry price.
Choose Seiko 5 Sports SRPD55 If...
- You prefer more dial presence and a larger case feel.
- Swimming, beach use, or tougher daily wear is part of the plan.
- You are specifically shopping for a diver style watch.
Price and Value Notes
Seiko 5 is often the value play at current pricing, while Seiko 5 Sports SRPD55 makes more sense if you will use its extra features regularly.
There is a real price gap here — treat the more expensive option as an upgrade decision and confirm whether the extra spend buys something you will notice in weekly use.
Where to Check Deals
Check current deals on Amazon and eBay using the buttons below — listing prices, seller quality, and condition can change quickly.
Check current deals on Amazon and eBay
Prices change often, so compare the latest listings and condition options before you buy.
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Seiko 5
Check Price on AmazonOpens in new tab · Price may vary
Check Price on eBayFrom $200 · New & used listings
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Seiko 5 Sports
Check Price on AmazonOpens in new tab · Price may vary
Check Price on eBayFrom $356 · New & used listings
Affiliate links — WatchCompared earns a commission on qualifying purchases. This doesn't affect your price.
Comparison FAQ
Which one is better for smaller wrists?
Seiko 5 — it is 42.9mm lug-to-lug versus 46mm, and lug-to-lug is what decides whether a watch overhangs a smaller wrist.
Which is better for swimming or rough daily wear?
Seiko 5 Sports SRPD55 — it is rated 100m versus 30m, which is the difference between swimming confidently and only handling splashes.
Is the more expensive one worth it?
Seiko 5 is the value pick at roughly $275 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.
Evidence & Method
How we compared these watches
No WatchCompared hands-on test claimed
- • Catalog specifications are normalized into the same units before differences are calculated.
- • The verdict uses only populated fields and the source-backed observations listed here.
- • Missing evidence reduces the depth of the conclusion instead of being filled with assumptions.
This page currently relies on normalized catalog fields and calculated differences. No external reviewer observation is used in its verdict.
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Seiko 5
Check Price on AmazonOpens in new tab · Price may vary
Check Price on eBayFrom $200 · New & used listings
Affiliate links — WatchCompared earns a commission on qualifying purchases. This doesn't affect your price.
Seiko 5 Sports
Check Price on AmazonOpens in new tab · Price may vary
Check Price on eBayFrom $356 · New & used listings
Affiliate links — WatchCompared earns a commission on qualifying purchases. This doesn't affect your price.
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