Seiko Cal. 6631 - 805

Seiko 6631-805

This Automatic model from 1970 features a 44mm PVD Black case. The Inner Rotating bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-809c7138d332]

Also known as: Bullhead, Helmet

Specifications

Movement
Automatic
Case Material
PVD Black
Case Width
44mm
Case Thickness
11.3mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Inner Rotating
Water Resistance
150m
Dial Color
Navy
Jewels
28j
Frequency
21,600 bph
Power Reserve
47 hours
Year
1970

Related Models

seikata-wm-809c7138d332