Seiko Cal. 5637 - 631

The Seiko 5637-631 represents an important milestone in Seiko's 1989 lineup. It features a Silver dial protected by a Mineral crystal and offers 50m of water resistance. [seikata-wm-8bae3a1dc019]

Also known as: Samurai

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

8.8mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

50m

Dial Color

Silver

Jewels

22j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1989

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