Seiko Cal. 6660 - 817

Seiko 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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