Seiko Cal. 5638 - 403

The Seiko 5638-403 represents an important milestone in Seiko's 1983 lineup. It features a Burgundy dial protected by a Mineral crystal and offers 140m of water resistance. [seikata-wm-789b4e8391bb]

Also known as: Sumo, Crown

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

12.1mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Burgundy

Jewels

36j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1983

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