Seiko Cal. 4548 - 816

This Automatic model from 1972 features a 46mm Titanium case. It features a Blue Sunburst dial protected by a Acrylic crystal and offers 190m of water resistance. [seikata-wm-63b63a2c8ab2]

Also known as: Tuna, Helmet

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

46mm

Case Thickness

9.5mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Blue Sunburst

Jewels

22j

Frequency

21,600 bph

Power Reserve

67 hours

Year

1972

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