Seiko Cal. 5231 - 539

The 5231-539 is a sought-after Quartz piece from Seiko's golden era. It features a Burgundy dial protected by a Acrylic crystal and offers 130m of water resistance. [seikata-wm-2f9aa02609b1]

Also known as: Tuna, Helmet

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

38mm

Case Thickness

9.2mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Burgundy

Jewels

35j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1976

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