Seiko Cal. 3837 - 109

The Seiko 3837-109 represents an important milestone in Seiko's 1973 lineup. Powered by the 3837 caliber with 17j jewels beating at 36,000 bph, it delivers a 43 hours power reserve. [seikata-wm-de9fd5a91c9a]

Also known as: Bullhead, UFO

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

42mm

Case Thickness

15.4mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

30m

Dial Color

Burgundy

Jewels

17j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1973

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