Seiko Cal. 6636 - 360

Seiko 6636-360

This Quartz model from 1974 features a 39mm PVD Black case. The Inner Rotating bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-7ba1c2214f71]

Also known as: Bullhead, Sportsmatic

Specifications

Movement
Quartz
Case Material
PVD Black
Case Width
39mm
Case Thickness
8.6mm
Lug Width
18mm
Crystal
Mineral
Bezel
Inner Rotating
Water Resistance
40m
Dial Color
Blue Sunburst
Jewels
22j
Frequency
28,800 bph
Power Reserve
49 hours
Year
1974

Related Models

seikata-wm-7ba1c2214f71