Seiko Cal. 5257 - 437

The Seiko 5257-437 represents an important milestone in Seiko's 1973 lineup. The Bidirectional bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-956edef45225]

Also known as: UFO

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

37mm

Case Thickness

15.8mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Navy

Jewels

33j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1973

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