Seiko Cal. 0721 - 677

Seiko 0721-677

This Spring Drive model from 1976 features a 36mm Titanium case. The Rotating bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-dcfadec5031d]

Also known as: Monster, Bullhead

Specifications

Movement
Spring Drive
Case Material
Titanium
Case Width
36mm
Case Thickness
8.1mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Rotating
Water Resistance
70m
Dial Color
Blue Sunburst
Jewels
23j
Frequency
21,600 bph
Power Reserve
62 hours
Year
1976

Related Models

seikata-wm-dcfadec5031d