Seiko Cal. 5257 - 723

The Seiko 5257-723 represents an important milestone in Seiko's 1980 lineup. It features a Blue Sunburst dial protected by a Acrylic crystal and offers 130m of water resistance. [seikata-wm-f9e4b2ca078c]

Also known as: Monster, World Timer

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

38mm

Case Thickness

9.7mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Blue Sunburst

Jewels

20j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1980

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