Seiko Cal. 5640 - 744

This Hand-Winding model from 1999 features a 35mm Gold-Plated case. It features a Navy dial protected by a Hardlex crystal and offers 70m of water resistance. [seikata-wm-07d213072038]

Also known as: Bullhead, Sea Horse

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

35mm

Case Thickness

14.9mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Navy

Jewels

31j

Frequency

28,800 bph

Power Reserve

49 hours

Year

1999

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