Seiko Cal. 3863 - 316

Seiko 3863-316

The Seiko 3863-316 represents an important milestone in Seiko's 1981 lineup. Powered by the 3863 caliber with 31j jewels beating at 21,600 bph, it delivers a 67 hours power reserve. [seikata-wm-abcf65ad3fa2]

Also known as: Tuna, Helmet

Specifications

Movement
Hand-Winding
Case Material
Titanium
Case Width
42mm
Case Thickness
15.5mm
Lug Width
19mm
Crystal
Acrylic
Bezel
Fixed
Water Resistance
60m
Dial Color
White
Jewels
31j
Frequency
21,600 bph
Power Reserve
67 hours
Year
1981

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