Seiko Cal. 3859 - 300

Seiko 3859-300

The Seiko 3859-300 represents an important milestone in Seiko's 1980 lineup. Powered by the 3859 caliber with 20j jewels beating at 36,000 bph, it delivers a 58 hours power reserve. [seikata-wm-cdcda2c6bda2]

Also known as: Helmet

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
35mm
Case Thickness
15.2mm
Lug Width
18mm
Crystal
Sapphire
Bezel
Rotating
Water Resistance
40m
Dial Color
Blue Sunburst
Jewels
20j
Frequency
36,000 bph
Power Reserve
58 hours
Year
1980

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