Seiko Cal. 6631 - 305

Seiko 6631-305

This Hand-Winding model from 1966 features a 45mm PVD Black case. The Rotating bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-54336e9c5537]

Also known as: Samurai, Navigator

Specifications

Movement
Hand-Winding
Case Material
PVD Black
Case Width
45mm
Case Thickness
11.8mm
Lug Width
21mm
Crystal
Mineral
Bezel
Rotating
Water Resistance
50m
Dial Color
Navy
Jewels
24j
Frequency
21,600 bph
Power Reserve
70 hours
Year
1966

Related Models

seikata-wm-54336e9c5537