Seiko Cal. 4433 - 250

This Spring Drive model from 1971 features a 36mm Stainless Steel case. The Coin-Edge bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-a7f32fe3ec84]

Also known as: Tuna, Helmet

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

36mm

Case Thickness

15.1mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Champagne

Jewels

25j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1971

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