Seiko Cal. 5637 - 201

The Seiko 5637-201 represents an important milestone in Seiko's 1967 lineup. The Bidirectional bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-77350b85d15d]

Also known as: Samurai, Bellmatic

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

40mm

Case Thickness

11.4mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Black

Jewels

32j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1967

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