Seiko Cal. 6639 - 774

This Hand-Winding model from 1979 features a 43mm Gold-Plated case. It features a Green dial protected by a Sapphire crystal and offers 50m of water resistance. [seikata-wm-3c98aee3ce83]

Also known as: Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

9.1mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Green

Jewels

23j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1979

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