Seiko Cal. 3856 - 957

The 3856-957 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 3856 caliber with 28j jewels beating at 36,000 bph, it delivers a 62 hours power reserve. [seikata-wm-302772cd64a9]

Also known as: Navigator

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

37mm

Case Thickness

13.3mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

150m

Dial Color

Green

Jewels

28j

Frequency

36,000 bph

Power Reserve

62 hours

Year

1978

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