Seiko Cal. 3817 - 109

The Seiko 3817-109 represents an important milestone in Seiko's 1973 lineup. Powered by the 3817 caliber with 17j jewels beating at 21,600 bph, it delivers a 51 hours power reserve. [seikata-wm-59b6a6dc475b]

Also known as: Helmet

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

41mm

Case Thickness

9.2mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Burgundy

Jewels

17j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1973

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