Seiko Cal. 5639 - 933

This Hand-Winding model from 1984 features a 37mm Stainless Steel case. It features a White dial protected by a Hardlex crystal and offers 30m of water resistance. [seikata-wm-c3e5a5b88d0f]

Also known as: Sea Horse

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

9.6mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

White

Jewels

31j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1984

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