Watch Almanac
Seiko

Prospex Diver (compact Samurai)

Ref. SRPL11

Case diameter
41.7 mm
Manufacturer spec
Lug-to-lug
49.5 mm
Manufacturer spec
Thickness
12.3 mm
Manufacturer spec
Lug width
20 mm
Manufacturer spec

Retail price $595 (US, Oct 2026)

Ideal fit
Wrist flat: 55.1 mmLug-to-lug: 49.5 mm

How the Prospex Diver (compact Samurai) wears

Its lugs add 7.8 mm to the 41.7 mm case, close to the 7 mm typical across the almanac, so its diameter is a fair guide to how it wears.

On our fit model it sits best on wrists from 7" to 8.25" (17.8–21.0 cm); below 7" the lugs start to reach the edge of the wrist.

At 12.3 mm thick it is slimmer than 73% of the 142 other dive watches we've measured, so it slides under a cuff more easily than most.

Its 20 mm lug width is one of the most common strap sizes; 186 other watches here share it, so aftermarket straps are easy to find.

Will the Prospex Diver (compact Samurai) fit your wrist?

With a 49.5 mm lug-to-lug, here is how it wears across common wrist sizes. We estimate the flat top of each wrist from its circumference; measure yours for a closer answer in the fit finder.

WristFlat width (est.)Fit
6"47.2 mmLugs overhang
6.5"51.2 mmSnug, lugs near the edge
7"55.1 mmIdeal fit
7.5"59.1 mmIdeal fit
8"63 mmIdeal fit

Specifications

Reference
SRPL11
Collection
Prospex
Status
In production
Introduced
2024
Case material
stainless steel
Crystal
Hardlex
Water resistance
200 m
Bezel
unidirectional rotating elapsed-time, red
Dial
red
Strap / bracelet
stainless steel bracelet, tri-fold push-button clasp with secure lock and extender
Style
Dive

Movement

Caliber
Seiko 4R35
Type
automatic
Power reserve
41 hours
Jewels
23

7 other watches use the Seiko 4R35

Takes 20 mm straps. See other 20 mm watches and straps.

More Prospex references

Watches that wear the same size

Other watches within 1.5 mm of its lug-to-lug.

Same 20 mm lug width

All 20 mm watches

These take the same straps as the Prospex Diver (compact Samurai).

Sources