Seiko Cal. 5664 - 660

Released in 1989, the Cal. 5664 with design code 660 was part of Seiko's domestic market collection. With its 20mm lug width and 13.8mm profile, it sits comfortably on most wrists. [seikata-wm-f0d6e4ed2cd9]

Also known as: Samurai, Helmet

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

13.8mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Silver

Jewels

17j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1989

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