Seiko Cal. 5257 - 637

The Seiko 5257-637 represents an important milestone in Seiko's 1987 lineup. It features a Silver dial protected by a Hardlex crystal and offers 70m of water resistance. [seikata-wm-1fdac00d136c]

Also known as: Samurai, Flighty

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

42mm

Case Thickness

15.8mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

70m

Dial Color

Silver

Jewels

32j

Frequency

28,800 bph

Power Reserve

55 hours

Year

1987

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