Seiko Cal. 6630 - 181

This Solar model from 1966 features a 40mm Hardlex-Coated Steel case. The Rotating bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-4fe88ae3731b]

Also known as: Helmet, UFO

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

12.5mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

170m

Dial Color

White

Jewels

23j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1966

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