Seiko Cal. 3813 - 642

Seiko 3813-642

The Seiko 3813-642 represents an important milestone in Seiko's 1980 lineup. It features a Blue Sunburst dial protected by a Acrylic crystal and offers 200m of water resistance. [seikata-wm-c9b72ef82b7f]

Also known as: Turtle

Specifications

Movement
Hand-Winding
Case Material
PVD Black
Case Width
38mm
Case Thickness
12.7mm
Lug Width
20mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
200m
Dial Color
Blue Sunburst
Jewels
25j
Frequency
21,600 bph
Power Reserve
71 hours
Year
1980

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