Seiko Cal. 6639 - 205

The Seiko 6639-205 represents an important milestone in Seiko's 1979 lineup. It features a Green dial protected by a Hardlex crystal and offers 130m of water resistance. [seikata-wm-80df9a1a8d97]

Also known as: Bellmatic, Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

39mm

Case Thickness

14.6mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

130m

Dial Color

Green

Jewels

23j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1979

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