Seiko Cal. 7140 - 409

This Automatic model from 1978 features a 37mm PVD Black case. Powered by the 7140 caliber with 18j jewels beating at 36,000 bph, it delivers a 59 hours power reserve. [seikata-wm-ac5a2824c685]

Also known as: Helmet, Silverwave

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

37mm

Case Thickness

12.8mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

180m

Dial Color

Cream

Jewels

18j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1978

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