Seiko Cal. 6638 - 468

Seiko 6638-468

This Automatic model from 1975 features a 39mm Titanium case. Powered by the 6638 caliber with 35j jewels beating at 28,800 bph, it delivers a 55 hours power reserve. [seikata-wm-1ecfde9e9793]

Specifications

Movement
Automatic
Case Material
Titanium
Case Width
39mm
Case Thickness
12.0mm
Lug Width
20mm
Crystal
Mineral
Bezel
Rotating
Water Resistance
80m
Dial Color
Navy
Jewels
35j
Frequency
28,800 bph
Power Reserve
55 hours
Year
1975

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