Seiko Cal. 6156 - 971

Released in 1976, the Cal. 6156 with design code 971 was part of Seiko's domestic market collection. The Bidirectional bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-61ebe206fab8]

Also known as: Monster, Arnie

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

11.0mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Champagne

Jewels

30j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1976

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