Watch Almanac
Seiko

Presage Style60's Open Heart

Ref. SSA425

Case diameter
40.8 mm
Manufacturer spec
Lug-to-lug
47 mm
Manufacturer spec
Thickness
12.8 mm
Manufacturer spec
Lug width
20 mm
Manufacturer spec

Retail price $595 (US, Oct 2026)

Ideal fit
Wrist flat: 55.1 mmLug-to-lug: 47 mm

How the Presage Style60's Open Heart wears

Its lugs add 6.2 mm to the 40.8 mm case, close to the 7.1 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 6.5" to 7.75" (16.5–19.7 cm); below 6.5" the lugs start to reach the edge of the wrist.

At 12.8 mm thick it is thicker than 86% of the 56 other dress watches we've measured, so expect it to sit tall on the wrist.

Its 20 mm lug width is one of the most common strap sizes; 104 other watches here share it, so aftermarket straps are easy to find.

Will the Presage Style60's Open Heart fit your wrist?

With a 47 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 mmIdeal fit
7"55.1 mmIdeal fit
7.5"59.1 mmIdeal fit
8"63 mmWears small

Specifications

Reference
SSA425
Collection
Presage
Status
In production
Case material
stainless steel
Crystal
box-shaped Hardlex
Water resistance
50 m
Bezel
fixed bezel with printed 60-minute scale
Dial
black
Strap / bracelet
stainless steel bracelet, three-fold clasp
Weight
140 g
Style
Dress, Everyday

Movement

Caliber
Seiko 4R39
Type
automatic
Power reserve
41 hours
Jewels
24

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

More Presage 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 Presage Style60's Open Heart.

Sources