Seiko Cal. 6661 - 358

The 6661-358 is a sought-after Solar piece from Seiko's golden era. Powered by the 6661 caliber with 25j jewels beating at 21,600 bph, it delivers a 42 hours power reserve. [seikata-wm-e80de1ec71d3]

Also known as: UFO

Specifications

Movement

Solar

Case Material

Titanium

Case Width

38mm

Case Thickness

8.3mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Silver

Jewels

25j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1972

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