Seiko Cal. 4431 - 811

Seiko 4431-811

This Spring Drive model from 1965 features a 34mm Hardlex-Coated Steel case. The Fixed bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-446350b0df2d]

Also known as: Turtle, World Timer

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
34mm
Case Thickness
9.7mm
Lug Width
18mm
Crystal
Sapphire
Bezel
Fixed
Water Resistance
60m
Dial Color
Champagne
Jewels
18j
Frequency
21,600 bph
Power Reserve
58 hours
Year
1965

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