Seiko Cal. 3863 - 673

The Seiko 3863-673 represents an important milestone in Seiko's 1986 lineup. Powered by the 3863 caliber with 22j jewels beating at 36,000 bph, it delivers a 38 hours power reserve. [seikata-wm-2bac5945a2de]

Also known as: Tuna, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

11.2mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Cream

Jewels

22j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1986

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