Seiko Cal. 3857 - 420

The Seiko 3857-420 represents an important milestone in Seiko's 1976 lineup. With its 19mm lug width and 9.2mm profile, it sits comfortably on most wrists. [seikata-wm-a69026923feb]

Also known as: Tuna, Panda

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

9.2mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Green

Jewels

34j

Frequency

28,800 bph

Power Reserve

49 hours

Year

1976

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