Seiko Cal. 6638 - 138

Seiko 6638-138

This Solar model from 1971 features a 35mm Hardlex-Coated Steel case. The Rotating bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-c197aaf58a2e]

Also known as: Turtle, Arnie

Specifications

Movement
Solar
Case Material
Hardlex-Coated Steel
Case Width
35mm
Case Thickness
10.2mm
Lug Width
20mm
Crystal
Hardlex
Bezel
Rotating
Water Resistance
40m
Dial Color
Burgundy
Jewels
17j
Frequency
36,000 bph
Power Reserve
50 hours
Year
1971

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