Seiko Cal. 6664 - 103

Released in 1973, the Cal. 6664 with design code 103 was part of Seiko's domestic market collection. It features a Blue Sunburst dial protected by a Mineral crystal and offers 90m of water resistance. [seikata-wm-ed6ef06e942e]

Also known as: Helmet

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

46mm

Case Thickness

15.9mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

90m

Dial Color

Blue Sunburst

Jewels

30j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1973

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