Seiko Cal. 6631 - 307

Seiko 6631-307

This Automatic model from 1988 features a 40mm Titanium case. The Fixed bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-3276e16faf5e]

Also known as: UFO

Specifications

Movement
Automatic
Case Material
Titanium
Case Width
40mm
Case Thickness
15.1mm
Lug Width
19mm
Crystal
Acrylic
Bezel
Fixed
Water Resistance
200m
Dial Color
Black
Jewels
27j
Frequency
28,800 bph
Power Reserve
44 hours
Year
1988

Related Models

seikata-wm-3276e16faf5e