Seiko Cal. 7031 - 640

This Automatic model from 1989 features a 35mm PVD Black case. Powered by the 7031 caliber with 36j jewels beating at 21,600 bph, it delivers a 68 hours power reserve. [seikata-wm-de86927bf67b]

Also known as: Helmet

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

35mm

Case Thickness

9.1mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Champagne

Jewels

36j

Frequency

21,600 bph

Power Reserve

68 hours

Year

1989

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