Seiko Cal. 6639 - 668

The 6639-668 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6639 caliber with 28j jewels beating at 21,600 bph, it delivers a 53 hours power reserve. [seikata-wm-7face9cfd65f]

Also known as: Baby Tuna

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

13.4mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Champagne

Jewels

28j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1982

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