Seiko Cal. 6661 - 870

The 6661-870 is a sought-after Solar piece from Seiko's golden era. Powered by the 6661 caliber with 31j jewels beating at 36,000 bph, it delivers a 51 hours power reserve. [seikata-wm-ee5330f3f04e]

Also known as: Rally, Navigator

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

45mm

Case Thickness

15.2mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Burgundy

Jewels

31j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1974

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