Seiko Cal. 4516 - 778

This Spring Drive model from 1965 features a 43mm Titanium case. It features a Navy dial protected by a Acrylic crystal and offers 180m of water resistance. [seikata-wm-dce33aaa8b63]

Also known as: Baby Tuna, Emperor

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

43mm

Case Thickness

8.1mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

180m

Dial Color

Navy

Jewels

32j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1965

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