Seiko Cal. 5257 - 387

The Seiko 5257-387 represents an important milestone in Seiko's 1986 lineup. Powered by the 5257 caliber with 27j jewels beating at 36,000 bph, it delivers a 55 hours power reserve. [seikata-wm-2f21ac2b31e3]

Also known as: Sea Horse

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

34mm

Case Thickness

13.8mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

90m

Dial Color

Champagne

Jewels

27j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1986

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