Seiko Cal. 6664 - 421

The Seiko 6664-421 represents an important milestone in Seiko's 1973 lineup. It features a Navy dial protected by a Hardlex crystal and offers 120m of water resistance. [seikata-wm-9dc2ec7c677f]

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

39mm

Case Thickness

15.2mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

120m

Dial Color

Navy

Jewels

28j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1973

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