Seiko Cal. 5637 - 503

The Seiko 5637-503 represents an important milestone in Seiko's 1967 lineup. It features a Blue Sunburst dial protected by a Mineral crystal and offers 130m of water resistance. [seikata-wm-b9dd9411a9b9]

Also known as: Sportsmatic, Arnie

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

35mm

Case Thickness

9.6mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

130m

Dial Color

Blue Sunburst

Jewels

22j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1967

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