Seiko Cal. 6628 - 670

The Seiko 6628-670 represents an important milestone in Seiko's 1969 lineup. Powered by the 6628 caliber with 27j jewels beating at 28,800 bph, it delivers a 68 hours power reserve. [seikata-wm-650e61cd150c]

Also known as: Sumo, UFO

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

14.1mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Navy

Jewels

27j

Frequency

28,800 bph

Power Reserve

68 hours

Year

1969

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