Seiko Cal. 3856 - 442

The Seiko 3856-442 represents an important milestone in Seiko's 1965 lineup. Powered by the 3856 caliber with 36j jewels beating at 28,800 bph, it delivers a 72 hours power reserve. [seikata-wm-3f1c1a2ad932]

Also known as: Crown

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

12.6mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

110m

Dial Color

Silver

Jewels

36j

Frequency

28,800 bph

Power Reserve

72 hours

Year

1965

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