Seiko Cal. 5648 - 973

This Automatic model from 1976 features a 43mm Stainless Steel case. It features a Navy dial protected by a Sapphire crystal and offers 150m of water resistance. [seikata-wm-2e3a9b9348fd]

Also known as: Tuna

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

14.5mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

150m

Dial Color

Navy

Jewels

22j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1976

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