Seiko Cal. 5644 - 734

This Solar model from 1965 features a 46mm Titanium case. With its 20mm lug width and 9.0mm profile, it sits comfortably on most wrists. [seikata-wm-c6ef4de409fd]

Also known as: Crown

Specifications

Movement

Solar

Case Material

Titanium

Case Width

46mm

Case Thickness

9.0mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Green

Jewels

36j

Frequency

21,600 bph

Power Reserve

72 hours

Year

1965

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