Seiko Cal. 6633 - 409

This Hand-Winding model from 1981 features a 37mm Stainless Steel case. It features a Champagne dial protected by a Acrylic crystal and offers 30m of water resistance. [seikata-wm-87a3f44772c0]

Also known as: Helmet, Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

9.6mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

30m

Dial Color

Champagne

Jewels

22j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1981

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