Seiko Cal. 3896 - 633

This Spring Drive model from 1966 features a 39mm Stainless Steel case. It features a Black dial protected by a Sapphire crystal and offers 40m of water resistance. [seikata-wm-49e3b93df8c1]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

15.4mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

40m

Dial Color

Black

Jewels

29j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1966

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