Seiko Cal. 6631 - 390

Seiko 6631-390

This Kinetic model from 1991 features a 37mm Two-Tone case. The Rotating bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-31fcf4f96e97]

Also known as: Sea Horse

Specifications

Movement
Kinetic
Case Material
Two-Tone
Case Width
37mm
Case Thickness
14.8mm
Lug Width
19mm
Crystal
Sapphire
Bezel
Rotating
Water Resistance
80m
Dial Color
White
Jewels
31j
Frequency
28,800 bph
Power Reserve
55 hours
Year
1991

Related Models

seikata-wm-31fcf4f96e97