Seiko Cal. 5657 - 441

This Quartz model from 1971 features a 39mm Two-Tone case. It features a Navy dial protected by a Hardlex crystal and offers 80m of water resistance. [seikata-wm-6496039f8b4b]

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

39mm

Case Thickness

12.5mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Navy

Jewels

17j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1971

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