Seiko Cal. 3817 - 978

This Spring Drive model from 1980 features a 37mm Hardlex-Coated Steel case. It features a Cream dial protected by a Acrylic crystal and offers 40m of water resistance. [seikata-wm-57fcf3305e07]

Also known as: Sea Horse, Emperor

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

8.0mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Cream

Jewels

19j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1980

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