Seiko Cal. 5633 - 257

The Seiko 5633-257 represents an important milestone in Seiko's 1982 lineup. It features a Burgundy dial protected by a Hardlex crystal and offers 100m of water resistance. [seikata-wm-3a7f506aceab]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

11.4mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Burgundy

Jewels

23j

Frequency

21,600 bph

Power Reserve

72 hours

Year

1982

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