Seiko Cal. 3863 - 690

The Seiko 3863-690 represents an important milestone in Seiko's 1986 lineup. The Inner Rotating bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-21e56bf0df6e]

Also known as: Sportsmatic, Baby Tuna

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

11.7mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Green

Jewels

23j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1986

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