Seiko Cal. 5631 - 454

Seiko 5631-454

This Automatic model from 1982 features a 43mm PVD Black case. The Bidirectional bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-64f62c0f0667]

Also known as: Helmet, World Timer

Specifications

Movement
Automatic
Case Material
PVD Black
Case Width
43mm
Case Thickness
12.8mm
Lug Width
22mm
Crystal
Mineral
Bezel
Bidirectional
Water Resistance
100m
Dial Color
Burgundy
Jewels
23j
Frequency
36,000 bph
Power Reserve
43 hours
Year
1982

Related Models

seikata-wm-64f62c0f0667