Seiko Cal. 7139 - 531

This Solar model from 1975 features a 37mm PVD Black case. It features a Green dial protected by a Sapphire crystal and offers 40m of water resistance. [seikata-wm-36503f296fdc]

Also known as: Sportsmatic, Crown

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

37mm

Case Thickness

8.6mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

40m

Dial Color

Green

Jewels

22j

Frequency

21,600 bph

Power Reserve

67 hours

Year

1975

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