Seiko Cal. 5273 - 879

This Hand-Winding model from 1975 features a 40mm Stainless Steel case. With its 20mm lug width and 11.2mm profile, it sits comfortably on most wrists. [seikata-wm-b450c08fb2cc]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

11.2mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

170m

Dial Color

Blue Sunburst

Jewels

23j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1975

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