Seiko Cal. 3878 - 403

This Hand-Winding model from 1985 features a 40mm Stainless Steel case. It features a Blue Sunburst dial protected by a Hardlex crystal and offers 60m of water resistance. [seikata-wm-03f8f75c9777]

Also known as: Sportsmatic, Navigator

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

15.7mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Blue Sunburst

Jewels

24j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1985

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