Seiko 5 Sports SRPE57
Auto sport · Seiko

Seiko 5 Sports SRPE57

Ref. SRPE57 · Amazon ASIN B08CDLX7GK
Automatic (4R36)Hardlex crystal100 m40 × 44.6 mm

The 40 mm 'Sports Style' 5 Sports with a black dial and no rotating bezel, the modern successor to the SNK series. Same 4R36 automatic, Hardlex and 100 m rating as the 42.5 mm models in a case that fits smaller wrists.

Power reserve41 h
Case diameter40 mm
Lug-to-lug44.6 mm
Thickness11.5 mm
Lug width20 mm
Warranty3 years
Amazon price · new
$306.00
Value Score
96 of 100
Rank in type
2 of 7 automatic sport watches
Spec points
68
vs. type median
-8% ($331)
Amazon sales rank
#5,520 wrist watches
View SRPE57 on Amazon

In stock · sold by Fresh Pearl. Price as of November 3, 2026, 18:15 UTC.

Wrist fit

Will the Seiko 5 Sports SRPE57 fit your wrist?

Enter your wrist circumference. The drawing scales the case (40 mm across, 44.6 mm lug-to-lug) against the flat top of a wrist that size, using the 3.6× lug-to-lug rule from our fit guide. Needs JavaScript; the rule itself is on the fit guide.

Specifications

What you get

Published manufacturer specifications. Fields we could not verify are left out rather than guessed.

ReferenceSRPE57
MovementAutomatic (4R36)
Power reserve41 h
Hacking / hand-windingYes / Yes
CrystalHardlex
Water resistance100 m
Screw-down crownNo
Case diameter40 mm
Lug-to-lug44.6 mm
Thickness11.5 mm
Lug width20 mm
Strap / braceletSteel
LumeYes
Calendardate, day
Warranty3 years
Fits wrist from16.1 cm (6.3″)
Value Score

How the 68 spec points add up

Value Score = 100 × √(spec points per dollar ÷ the best ratio among automatic sport watches in stock on Amazon today). Full methodology.

Automatic, hacking + hand-winding+30
Hardlex crystal+8
100 m water resistance+12
Steel bracelet+6
Luminous hands and markers+4
Date+2
Day+1
Power reserve 41 h+3
3-year warranty+2
Spec points68
Alternatives

Compared with other automatic sport watches

Same type, other model families, verified Amazon prices today. See the full Automatic Sport & Everyday Watches ranking →

Watches ranked by Value Score
#WatchMovementCrystalWater res.Case diameter × lug-to-lugFits wristSpec ptsPriceValue ScoreBuy
1
Automatic (4R36)Hardlex100 m40 × 44.6 mm≥ 16.1 cm (6.3″)68$306.00third-party96Amazon
2
Citizen Tsuyosa
3 variants · priced: NJ0150-56X
Automatic (8210)Mineral50 m40 mm—58$356.2582Amazon
3
Automatic (Sistem51)—30 m42 mm—41$275.0078Amazon
4
Automatic (Miyota 821A)Mineral100 m45 mm—58$440.0074Amazon
5
Automatic (Powermatic 80)Sapphire100 m35 × 39.5 mm≥ 14.2 cm (5.6″)76$795.0063Amazon
6
Tissot PRX 40 Powermatic 80
2 variants · priced: T137.407.11.051.00
Automatic (Powermatic 80)Sapphire100 m40 × 44.5 mm≥ 16 cm (6.3″)76$850.0061Amazon

Amazon.com prices as of November 3, 2026, 18:15 UTC — details. third-party = sold by a marketplace seller, not Amazon (warranty may differ); ships later = not in stock today, never crowned best value.

FAQ

Questions about the Seiko 5 Sports SRPE57

How much does the Seiko 5 Sports SRPE57 cost on Amazon?
As of November 3, 2026, 18:15 UTC, the Seiko 5 Sports SRPE57 (SRPE57) is listed new on Amazon at $306.00, sold by Fresh Pearl. That is 8% below the median of the 8 automatic sport watches we track with a live price ($331). Prices change; the price shown on Amazon at checkout applies.
What is the Value Score of the Seiko 5 Sports SRPE57?
Value Score 96. It earns 68 spec points (Automatic (4R36), hardlex crystal, 100 m water resistance) and today's price of $306.00 gives 22.2 points per $100. The score is 100 times the square root of that ratio divided by the best ratio among automatic sport watches in stock on Amazon today. The formula is published on our methodology page.
What wrist size fits the Seiko 5 Sports SRPE57?
With a 44.6 mm lug-to-lug span and 40 mm case, it sits flat on wrists of about 16.1 cm (6.3 in) or more, using the 3.6× lug-to-lug rule of thumb. Lug width is 20 mm for replacement straps.
What are alternatives to the Seiko 5 Sports SRPE57?
Among automatic sport watches with a verified Amazon price today, the highest-scoring alternatives from other model families are: Citizen Tsuyosa NJ0150-56L ($356.25, Value Score 82), Swatch Irony Sistem51 YIS431 ($275.00, Value Score 78), Bulova Marine Star Automatic 98A225 ($440.00, Value Score 74). See the full ranking on our Automatic Sport & Everyday Watches page.
Straps

20 mm straps that fit the Seiko 5 Sports SRPE57

The lug width is 20 mm, so any 20 mm strap fits. These are the straps we list for that width; see the lug width chart for every size and the accessories page for winders, boxes and tools. Full picks with buying notes: Best 20 mm watch straps.

20 mm straps
ItemKindLug widthPriceBuy
BISONSTRAP hand-stitched leather, quick release, 20 mm
Entry-price leather with quick-release pins.
Leather strap20 mm$14.99third-partyAmazon
Getalia Tuscany vegetable-tanned leather, 20 mm
Full-grain Italian leather; ages with wear.
Leather strap20 mm$24.99third-partyAmazon
Archer military-style nylon, 20 mm, black
Heavy nylon with brushed hardware.
Nylon / NATO strap20 mm$19.99third-partyAmazon
Archer military-style nylon, 20 mm, black/gray
Heavy nylon with brushed hardware.
Nylon / NATO strap20 mm$19.99third-partyAmazon
StrapHabit FKM rubber, quick release, 20 mm
Fluororubber: no smell, no sweat marks; the diver upgrade.
Rubber strap20 mm$38.95third-partyAmazon
WOCCI 316L steel bracelet, double-locking clasp, 20 mm
Inexpensive solid steel bracelet.
Steel bracelet20 mm$28.99third-partyAmazon
EACHE steel mesh bracelet, 20 mm
Milanese mesh for dress and field watches.
Steel bracelet20 mm$19.99third-partyAmazon

Amazon.com prices as of November 3, 2026, 18:15 UTC — details. Accessories have no Value Score; they are listed for fit, not ranked.

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