Seiko Cal. 3878 - 106

The Seiko 3878-106 represents an important milestone in Seiko's 1988 lineup. With its 21mm lug width and 8.5mm profile, it sits comfortably on most wrists. [seikata-wm-6b6381d171fd]

Also known as: Tuna, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

8.5mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Champagne

Jewels

32j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1988

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