Seiko Cal. 5671 - 664

The 5671-664 is a sought-after Quartz piece from Seiko's golden era. It features a Navy dial protected by a Mineral crystal and offers 150m of water resistance. [seikata-wm-22a06721e14b]

Also known as: Sumo, Navigator

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

15.2mm

Lug Width

18mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

150m

Dial Color

Navy

Jewels

29j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1978

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