Seiko Cal. 3863 - 673

Seiko 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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