Seiko Cal. 0778 - 424

This Spring Drive model from 1980 features a 40mm Hardlex-Coated Steel case. It features a Blue Sunburst dial protected by a Sapphire crystal and offers 90m of water resistance. [seikata-wm-40c8e445c195]

Also known as: Helmet, Navigator

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

15.8mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Blue Sunburst

Jewels

26j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1980

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