Seiko Cal. 6638 - 913

Seiko 6638-913

This Automatic model from 1965 features a 41mm Hardlex-Coated Steel case. The Fixed bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-055aa4023c36]

Also known as: Sportsmatic, Crown

Specifications

Movement
Automatic
Case Material
Hardlex-Coated Steel
Case Width
41mm
Case Thickness
8.7mm
Lug Width
22mm
Crystal
Sapphire
Bezel
Fixed
Water Resistance
190m
Dial Color
Green
Jewels
34j
Frequency
28,800 bph
Power Reserve
53 hours
Year
1965

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seikata-wm-055aa4023c36