Seiko Cal. 5657 - 671

The 5657-671 is a sought-after Quartz piece from Seiko's golden era. It features a Blue Sunburst dial protected by a Hardlex crystal and offers 140m of water resistance. [seikata-wm-fc35ddeb7e3e]

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

10.7mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Blue Sunburst

Jewels

17j

Frequency

21,600 bph

Power Reserve

48 hours

Year

1972

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