Seiko Cal. 5620 - 641

This Hand-Winding model from 1976 features a 46mm Hardlex-Coated Steel case. It features a Navy dial protected by a Acrylic crystal and offers 140m of water resistance. [seikata-wm-75842e36a9d2]

Also known as: Goldfeather, Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

12.3mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Navy

Jewels

17j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1976

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