Seiko Cal. 3863 - 781

Seiko 3863-781

The Seiko 3863-781 represents an important milestone in Seiko's 1979 lineup. Powered by the 3863 caliber with 23j jewels beating at 28,800 bph, it delivers a 67 hours power reserve. [seikata-wm-f51f207f45f6]

Also known as: Bullhead, Sportsmatic

Specifications

Movement
Automatic
Case Material
Titanium
Case Width
45mm
Case Thickness
12.7mm
Lug Width
22mm
Crystal
Sapphire
Bezel
Rotating
Water Resistance
100m
Dial Color
White
Jewels
23j
Frequency
28,800 bph
Power Reserve
67 hours
Year
1979

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