Seiko Cal. 3817 - 109

The Seiko 3817-109 represents an important milestone in Seiko's 1965 lineup. Powered by the 3817 caliber with 34j jewels beating at 36,000 bph, it delivers a 36 hours power reserve. [seikata-wm-1ec0d981fd4f]

Also known as: Helmet

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

43mm

Case Thickness

10.2mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

60m

Dial Color

Silver

Jewels

34j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1965

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