Seiko Cal. 4521 - 740

The Seiko 4521-740 represents an important milestone in Seiko's 1997 lineup. It features a Green dial protected by a Hardlex crystal and offers 30m of water resistance. [seikata-wm-1646944418f1]

Also known as: Golden Tuna

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

34mm

Case Thickness

14.3mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Green

Jewels

28j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1997

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