Seiko Cal. 3860 - 278

The Seiko 3860-278 represents an important milestone in Seiko's 1974 lineup. The Rotating bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-9cf29111bca1]

Also known as: Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

12.6mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

170m

Dial Color

Blue Sunburst

Jewels

31j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1974

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