Seiko Cal. 6660 - 706

The 6660-706 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6660 caliber with 24j jewels beating at 28,800 bph, it delivers a 69 hours power reserve. [seikata-wm-898c04a71c86]

Also known as: Sportsmatic, Golden Tuna

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

37mm

Case Thickness

10.4mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

100m

Dial Color

Green

Jewels

24j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1973

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