Seiko Cal. 4421 - 453

The Seiko 4421-453 represents an important milestone in Seiko's 1976 lineup. It features a Navy dial protected by a Hardlex crystal and offers 200m of water resistance. [seikata-wm-0c87fea6ad5a]

Also known as: Tuna, Golden Tuna

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

11.6mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Navy

Jewels

35j

Frequency

36,000 bph

Power Reserve

47 hours

Year

1976

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