Seiko Cal. 3863 - 978

Seiko 3863-978

The Seiko 3863-978 represents an important milestone in Seiko's 1969 lineup. Powered by the 3863 caliber with 30j jewels beating at 28,800 bph, it delivers a 68 hours power reserve. [seikata-wm-53c89edc3392]

Also known as: Monster, Navigator

Specifications

Movement
Kinetic
Case Material
Hardlex-Coated Steel
Case Width
44mm
Case Thickness
13.8mm
Lug Width
18mm
Crystal
Hardlex
Bezel
Inner Rotating
Water Resistance
170m
Dial Color
Black
Jewels
30j
Frequency
28,800 bph
Power Reserve
68 hours
Year
1969

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seikata-wm-53c89edc3392