Seiko Cal. 7139 - 427

Released in 1971, the Cal. 7139 with design code 427 was part of Seiko's domestic market collection. It features a Cream dial protected by a Mineral crystal and offers 70m of water resistance. [seikata-wm-ceb480eff095]

Also known as: Helmet

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

9.6mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

70m

Dial Color

Cream

Jewels

18j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1971

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