Seiko Cal. 3863 - 638

The Seiko 3863-638 represents an important milestone in Seiko's 1975 lineup. It features a Burgundy dial protected by a Mineral crystal and offers 100m of water resistance. [seikata-wm-6cf52ee77ded]

Also known as: Tuna

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

10.1mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Burgundy

Jewels

30j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1975

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