Seiko Cal. 3863 - 948

The Seiko 3863-948 represents an important milestone in Seiko's 1977 lineup. With its 18mm lug width and 11.0mm profile, it sits comfortably on most wrists. [seikata-wm-bddc5e6262f7]

Also known as: Tuna

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

37mm

Case Thickness

11.0mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Champagne

Jewels

19j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1977

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