Seiko Cal. 6639 - 658

This Automatic model from 1979 features a 39mm Stainless Steel case. It features a White dial protected by a Sapphire crystal and offers 190m of water resistance. [seikata-wm-6ca3af72cb1b]

Also known as: Helmet

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

11.4mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

190m

Dial Color

White

Jewels

33j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1979

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