Seiko Cal. 3879 - 863

Seiko 3879-863

This Hand-Winding model from 1969 features a 38mm Hardlex-Coated Steel case. Powered by the 3879 caliber with 34j jewels beating at 21,600 bph, it delivers a 38 hours power reserve. [seikata-wm-bb868a00d7ba]

Also known as: Turtle, Helmet

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
38mm
Case Thickness
9.3mm
Lug Width
18mm
Crystal
Mineral
Bezel
Bidirectional
Water Resistance
120m
Dial Color
Blue Sunburst
Jewels
34j
Frequency
21,600 bph
Power Reserve
38 hours
Year
1969

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