Seiko Cal. 4421 - 537

This Quartz model from 1981 features a 40mm Hardlex-Coated Steel case. It features a Navy dial protected by a Mineral crystal and offers 70m of water resistance. [seikata-wm-b4e09ffbe737]

Also known as: Turtle, Navigator

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

11.0mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

70m

Dial Color

Navy

Jewels

33j

Frequency

21,600 bph

Power Reserve

68 hours

Year

1981

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