Seiko Cal. 5644 - 654

This Hand-Winding model from 1992 features a 38mm Gold-Plated case. It features a Navy dial protected by a Hardlex crystal and offers 50m of water resistance. [seikata-wm-b20ba61cecda]

Also known as: Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

38mm

Case Thickness

13.4mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

50m

Dial Color

Navy

Jewels

25j

Frequency

28,800 bph

Power Reserve

53 hours

Year

1992

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