Seiko Cal. 3878 - 413

The Seiko 3878-413 represents an important milestone in Seiko's 1980 lineup. The Rotating bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-0d450d08fa76]

Also known as: Helmet, Emperor

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

13.3mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

60m

Dial Color

Navy

Jewels

24j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1980

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