Seiko Cal. 4531 - 727

The Seiko 4531-727 represents an important milestone in Seiko's 1965 lineup. It features a Blue Sunburst dial protected by a Mineral crystal and offers 140m of water resistance. [seikata-wm-88a8192e297d]

Also known as: Flighty

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

9.9mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

140m

Dial Color

Blue Sunburst

Jewels

30j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1965

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