Seiko Cal. 5631 - 189

The Seiko 5631-189 represents an important milestone in Seiko's 1990 lineup. It features a Blue Sunburst dial protected by a Mineral crystal and offers 130m of water resistance. [seikata-wm-33780ff48c17]

Also known as: Turtle, Bullhead

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

10.8mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

130m

Dial Color

Blue Sunburst

Jewels

26j

Frequency

36,000 bph

Power Reserve

68 hours

Year

1990

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