Seiko Cal. 6639 - 322

The Seiko 6639-322 represents an important milestone in Seiko's 1981 lineup. It features a White dial protected by a Hardlex crystal and offers 60m of water resistance. [seikata-wm-adf0249f04b1]

Also known as: Baby Tuna

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

44mm

Case Thickness

13.8mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

60m

Dial Color

White

Jewels

35j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1981

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