Seiko Cal. 6639 - 194

The Seiko 6639-194 represents an important milestone in Seiko's 1987 lineup. It features a Green dial protected by a Acrylic crystal and offers 160m of water resistance. [seikata-wm-b7a3ff9970c7]

Also known as: Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

46mm

Case Thickness

8.7mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Green

Jewels

33j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1987

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