Seiko Cal. 3857 - 845

The Seiko 3857-845 represents an important milestone in Seiko's 1979 lineup. Powered by the 3857 caliber with 20j jewels beating at 36,000 bph, it delivers a 48 hours power reserve. [seikata-wm-b18142920cdf]

Also known as: Rally, Navigator

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

43mm

Case Thickness

9.0mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

White

Jewels

20j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1979

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