Seiko Cal. 4518 - 381

This Solar model from 1970 features a 40mm Stainless Steel case. With its 20mm lug width and 11.9mm profile, it sits comfortably on most wrists. [seikata-wm-8badb99e0ea7]

Also known as: Sportsmatic

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

11.9mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Black

Jewels

29j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1970

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