Seiko

Prospex

SPB155
$725
MSRP

Specifications

Case Diameter
38mm
Lug to Lug
46mm
Thickness
12.9mm
Lug Width
20mm
Material
SS
Dial
Green
Movement
automatic
Caliber
6R35
Crystal
Sapphire
Strap
Bracelet

Pricing & Fit Summary

With a lug-to-lug measurement of 46mm, this reference is generally recommended for wrist sizes 13.8cm and larger. Note: fit is determined by lug-to-lug distance (46mm), not case diameter (38mm).

38mm
Diameter
46mm
Lug to Lug
12.9mm
Thickness
20mm
Lug Width
Caliber
6R35
Movement
Automatic
Crystal
Sapphire
Case Material
SS
Dial
Green
Strap
Bracelet
MSRP
$725
Introduced
2020

Perceived Size

How it wears, not just how it measures

~48mm

vs 46mm L2L

Compact (36mm)Substantial (60mm)

12.9mm case thickness adds +1.9mm wrist presence

Will this fit your wrist?

Slide to your wrist circumference to see the fit diagram.

Wrist circumference17 cm
12cm17cm (avg)22cm