Seiko Cal. 6660 - 700

The 6660-700 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6660 caliber with 27j jewels beating at 28,800 bph, it delivers a 58 hours power reserve. [seikata-wm-fd4f0e7aa70d]

Also known as: Sumo

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

38mm

Case Thickness

11.8mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

80m

Dial Color

Cream

Jewels

27j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1968

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