Seiko Cal. 6639 - 529

This Spring Drive model from 1975 features a 37mm Hardlex-Coated Steel case. It features a Black dial protected by a Acrylic crystal and offers 190m of water resistance. [seikata-wm-f039a39db692]

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

15.6mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

Black

Jewels

29j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1975

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