Seiko Cal. 6631 - 131

Seiko 6631-131

This Kinetic model from 1966 features a 43mm PVD Black case. The Inner Rotating bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-d209d1287b3c]

Also known as: Bellmatic

Specifications

Movement
Kinetic
Case Material
PVD Black
Case Width
43mm
Case Thickness
8.3mm
Lug Width
20mm
Crystal
Sapphire
Bezel
Inner Rotating
Water Resistance
90m
Dial Color
Silver
Jewels
22j
Frequency
28,800 bph
Power Reserve
72 hours
Year
1966

Related Models

seikata-wm-d209d1287b3c