Seiko Cal. 5630 - 139

The Seiko 5630-139 represents an important milestone in Seiko's 1981 lineup. The Bidirectional bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-99a052b63433]

Also known as: Tuna

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

44mm

Case Thickness

14.8mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Champagne

Jewels

30j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1981

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