Seiko Cal. 3813 - 981

This Automatic model from 1969 features a 39mm Hardlex-Coated Steel case. It features a Silver dial protected by a Acrylic crystal and offers 100m of water resistance. [seikata-wm-22a971d98c8d]

Also known as: Turtle, Helmet

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

15.5mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Silver

Jewels

27j

Frequency

28,800 bph

Power Reserve

64 hours

Year

1969

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