Seiko Cal. 4457 - 531

The Seiko 4457-531 represents an important milestone in Seiko's 1970 lineup. It features a Blue Sunburst dial protected by a Mineral crystal and offers 50m of water resistance. [seikata-wm-9e3e4f544248]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

12.5mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

21j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1970

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