Seiko Cal. 6660 - 856

Released in 1975, the Cal. 6660 with design code 856 was part of Seiko's domestic market collection. It features a Navy dial protected by a Hardlex crystal and offers 130m of water resistance. [seikata-wm-cc7da2136d2d]

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

14.9mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Navy

Jewels

20j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1975

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