Seiko Cal. 7198 - 816

This Spring Drive model from 1977 features a 42mm Hardlex-Coated Steel case. Powered by the 7198 caliber with 28j jewels beating at 28,800 bph, it delivers a 63 hours power reserve. [seikata-wm-3b7a30bd2e89]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

11.2mm

Lug Width

18mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

80m

Dial Color

Blue Sunburst

Jewels

28j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1977

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