Seiko Cal. 5631 - 928

Seiko 5631-928

This Kinetic model from 1986 features a 37mm Hardlex-Coated Steel case. The Inner Rotating bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-3a2032eb8532]

Also known as: UFO

Specifications

Movement
Kinetic
Case Material
Hardlex-Coated Steel
Case Width
37mm
Case Thickness
13.5mm
Lug Width
18mm
Crystal
Hardlex
Bezel
Inner Rotating
Water Resistance
130m
Dial Color
White
Jewels
29j
Frequency
28,800 bph
Power Reserve
70 hours
Year
1986

Related Models

seikata-wm-3a2032eb8532