Seiko Cal. 5638 - 553

This Spring Drive model from 1986 features a 35mm Hardlex-Coated Steel case. It features a Cream dial protected by a Sapphire crystal and offers 120m of water resistance. [seikata-wm-15f6ba49265a]

Also known as: Helmet, Sea Horse

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

12.3mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

Cream

Jewels

22j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1986

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