Seiko Cal. 3876 - 820

The Seiko 3876-820 represents an important milestone in Seiko's 1969 lineup. With its 19mm lug width and 13.9mm profile, it sits comfortably on most wrists. [seikata-wm-85fb6ec3524c]

Also known as: Tuna, Flighty

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

13.9mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Green

Jewels

31j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1969

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