Seiko Cal. 5631 - 921

Seiko 5631-921

This Solar model from 1980 features a 35mm PVD Black case. The Rotating bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-8abd48183a95]

Also known as: Silverwave

Specifications

Movement
Solar
Case Material
PVD Black
Case Width
35mm
Case Thickness
10.3mm
Lug Width
19mm
Crystal
Mineral
Bezel
Rotating
Water Resistance
120m
Dial Color
Navy
Jewels
20j
Frequency
21,600 bph
Power Reserve
61 hours
Year
1980

Related Models

seikata-wm-8abd48183a95