Seiko Cal. 5640 - 771

Seiko 5640-771

This Automatic model from 1965 features a 36mm Titanium case. The Inner Rotating bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-3f7e7d3133b8]

Specifications

Movement
Automatic
Case Material
Titanium
Case Width
36mm
Case Thickness
10.0mm
Lug Width
19mm
Crystal
Acrylic
Bezel
Inner Rotating
Water Resistance
110m
Dial Color
Cream
Jewels
19j
Frequency
21,600 bph
Power Reserve
46 hours
Year
1965

Related Models

seikata-wm-3f7e7d3133b8