Seiko Cal. 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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