Seiko Cal. 5681 - 421

This Quartz model from 1967 features a 46mm Two-Tone case. It features a Green dial protected by a Hardlex crystal and offers 40m of water resistance. [seikata-wm-dfcb0adc979e]

Also known as: Monster

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

46mm

Case Thickness

13.8mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Green

Jewels

26j

Frequency

28,800 bph

Power Reserve

68 hours

Year

1967

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