Seiko Cal. 3813 - 631

Seiko 3813-631

The Seiko 3813-631 represents an important milestone in Seiko's 1968 lineup. The Coin-Edge bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-13d57b52dd04]

Also known as: Sea Horse, Arnie

Specifications

Movement
Quartz
Case Material
Stainless Steel
Case Width
35mm
Case Thickness
8.6mm
Lug Width
20mm
Crystal
Hardlex
Bezel
Coin-Edge
Water Resistance
50m
Dial Color
Champagne
Jewels
32j
Frequency
36,000 bph
Power Reserve
41 hours
Year
1968

Related Models

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