Seiko Cal. 6670 - 904

Released in 1966, the Cal. 6670 with design code 904 was part of Seiko's domestic market collection. The Inner Rotating bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-ab640fd4b008]

Also known as: UFO

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

12.2mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Navy

Jewels

35j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1966

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