Seiko Cal. 5643 - 673

This Automatic model from 1965 features a 40mm Titanium case. It features a Navy dial protected by a Sapphire crystal and offers 100m of water resistance. [seikata-wm-c3429cbbbcfb]

Also known as: UFO

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

40mm

Case Thickness

12.1mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Navy

Jewels

17j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1965

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