Seiko Cal. 6660 - 590

Released in 1979, the Cal. 6660 with design code 590 was part of Seiko's domestic market collection. It features a Navy dial protected by a Sapphire crystal and offers 110m of water resistance. [seikata-wm-8ec1da16669a]

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

35mm

Case Thickness

10.4mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Navy

Jewels

25j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1979

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