Seiko Cal. 6631 - 774

Seiko 6631-774

This Solar model from 1966 features a 42mm Hardlex-Coated Steel case. The Rotating bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-cb9d889e7249]

Also known as: Bullhead, Bellmatic

Specifications

Movement
Solar
Case Material
Hardlex-Coated Steel
Case Width
42mm
Case Thickness
15.2mm
Lug Width
20mm
Crystal
Mineral
Bezel
Rotating
Water Resistance
60m
Dial Color
Silver
Jewels
25j
Frequency
21,600 bph
Power Reserve
36 hours
Year
1966

Related Models

seikata-wm-cb9d889e7249