Seiko Cal. 7139 - 442

Released in 1988, the Cal. 7139 with design code 442 was part of Seiko's domestic market collection. It features a Black dial protected by a Sapphire crystal and offers 150m of water resistance. [seikata-wm-8f1cbb497fbb]

Also known as: Shogun, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

35mm

Case Thickness

15.2mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Black

Jewels

23j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1988

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