Seiko Cal. 3847 - 120

The Seiko 3847-120 represents an important milestone in Seiko's 1971 lineup. With its 19mm lug width and 9.8mm profile, it sits comfortably on most wrists. [seikata-wm-6d971e30a0a8]

Also known as: Sumo, UFO

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

9.8mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

40m

Dial Color

Navy

Jewels

33j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1971

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