Seiko Cal. 6640 - 671

This Kinetic model from 1967 features a 45mm Titanium case. With its 22mm lug width and 11.3mm profile, it sits comfortably on most wrists. [seikata-wm-64da1a0f6771]

Also known as: Helmet

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

45mm

Case Thickness

11.3mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Silver

Jewels

35j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1967

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