Seiko Cal. 6638 - 804

Seiko 6638-804

This Automatic model from 1972 features a 39mm Titanium case. Powered by the 6638 caliber with 20j jewels beating at 36,000 bph, it delivers a 60 hours power reserve. [seikata-wm-0fba41a0fe81]

Specifications

Movement
Automatic
Case Material
Titanium
Case Width
39mm
Case Thickness
14.4mm
Lug Width
18mm
Crystal
Sapphire
Bezel
Inner Rotating
Water Resistance
70m
Dial Color
Blue Sunburst
Jewels
20j
Frequency
36,000 bph
Power Reserve
60 hours
Year
1972

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seikata-wm-0fba41a0fe81