Seiko Cal. 5631 - 349

This Kinetic model from 1983 features a 44mm Stainless Steel case. The Bidirectional bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-e307a22eb84a]

Also known as: Helmet, Baby Tuna

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

44mm

Case Thickness

13.3mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Blue Sunburst

Jewels

31j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1983

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