Seiko Cal. 3813 - 409

This Hand-Winding model from 1970 features a 39mm Titanium case. With its 21mm lug width and 13.9mm profile, it sits comfortably on most wrists. [seikata-wm-dc20f5172aa0]

Also known as: Turtle, Silverwave

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

39mm

Case Thickness

13.9mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Blue Sunburst

Jewels

30j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1970

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