Seiko Cal. 3881 - 691

This Spring Drive model from 1981 features a 39mm Titanium case. The Rotating bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-5cc956ab3ab4]

Also known as: Turtle, Samurai

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

39mm

Case Thickness

13.8mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

90m

Dial Color

White

Jewels

24j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1981

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