Seiko Cal. 3878 - 814

The Seiko 3878-814 represents an important milestone in Seiko's 1973 lineup. With its 20mm lug width and 8.9mm profile, it sits comfortably on most wrists. [seikata-wm-a4077ab924f3]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

38mm

Case Thickness

8.9mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

30m

Dial Color

Silver

Jewels

24j

Frequency

21,600 bph

Power Reserve

69 hours

Year

1973

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