Seiko Cal. 6631 - 350

This Solar model from 1981 features a 42mm Hardlex-Coated Steel case. With its 20mm lug width and 15.7mm profile, it sits comfortably on most wrists. [seikata-wm-1fccfed9cc01]

Also known as: Arnie

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

15.7mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Silver

Jewels

23j

Frequency

28,800 bph

Power Reserve

68 hours

Year

1981

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