Seiko Cal. 6619 - 638

This Hand-Winding model from 1977 features a 37mm Hardlex-Coated Steel case. It features a Black dial protected by a Hardlex crystal and offers 150m of water resistance. [seikata-wm-2a451c08fbe9]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

8.6mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

150m

Dial Color

Black

Jewels

33j

Frequency

28,800 bph

Power Reserve

64 hours

Year

1977

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