Seiko Cal. 5631 - 420

Seiko 5631-420

This Solar model from 1980 features a 35mm Titanium case. The Bidirectional bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-2738e9879bb7]

Also known as: Helmet

Specifications

Movement
Solar
Case Material
Titanium
Case Width
35mm
Case Thickness
9.5mm
Lug Width
20mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
80m
Dial Color
Silver
Jewels
25j
Frequency
28,800 bph
Power Reserve
39 hours
Year
1980

Related Models

seikata-wm-2738e9879bb7