Seiko Cal. 5637 - 674

The Seiko 5637-674 represents an important milestone in Seiko's 1988 lineup. It features a Green dial protected by a Sapphire crystal and offers 110m of water resistance. [seikata-wm-e2adbbaabb02]

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

11.6mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Green

Jewels

30j

Frequency

21,600 bph

Power Reserve

72 hours

Year

1988

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