Seiko Cal. 6640 - 210

This Solar model from 1982 features a 42mm Titanium case. With its 21mm lug width and 9.9mm profile, it sits comfortably on most wrists. [seikata-wm-1430bd85def0]

Also known as: Helmet

Specifications

Movement

Solar

Case Material

Titanium

Case Width

42mm

Case Thickness

9.9mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Navy

Jewels

22j

Frequency

28,800 bph

Power Reserve

68 hours

Year

1982

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