Seiko Cal. 6666 - 639

The Seiko 6666-639 represents an important milestone in Seiko's 1965 lineup. Powered by the 6666 caliber with 27j jewels beating at 28,800 bph, it delivers a 36 hours power reserve. [seikata-wm-a9fb37c9a08c]

Also known as: Flighty

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

8.9mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

40m

Dial Color

Cream

Jewels

27j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1965

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