Seiko Cal. 3856 - 207

The Seiko 3856-207 represents an important milestone in Seiko's 1966 lineup. Powered by the 3856 caliber with 21j jewels beating at 36,000 bph, it delivers a 55 hours power reserve. [seikata-wm-89b381c508fb]

Also known as: Monster, Flighty

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

10.2mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Green

Jewels

21j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1966

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