Seiko Cal. 5645 - 416

This Spring Drive model from 1975 features a 37mm Titanium case. The Inner Rotating bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-7fb4065fcc64]

Also known as: Arnie

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

37mm

Case Thickness

11.5mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Green

Jewels

19j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1975

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