Seiko Cal. 6639 - 344

The 6639-344 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6639 caliber with 19j jewels beating at 28,800 bph, it delivers a 58 hours power reserve. [seikata-wm-7eab17c96dc7]

Also known as: Baby Tuna

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

12.3mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Green

Jewels

19j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1993

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