Seiko Cal. 3854 - 412

The Seiko 3854-412 represents an important milestone in Seiko's 1982 lineup. Powered by the 3854 caliber with 20j jewels beating at 28,800 bph, it delivers a 36 hours power reserve. [seikata-wm-b6ea6e66feb5]

Also known as: Monster, Bellmatic

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

10.5mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Navy

Jewels

20j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1982

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