Seiko Cal. 6660 - 817

The Seiko 6660-817 represents an important milestone in Seiko's 1970 lineup. Powered by the 6660 caliber with 29j jewels beating at 28,800 bph, it delivers a 44 hours power reserve. [seikata-wm-4cb79288af33]

Also known as: Sea Horse, Arnie

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

9.5mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Navy

Jewels

29j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1970

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