Seiko Cal. 7171 - 556

Released in 1967, the Cal. 7171 with design code 556 was part of Seiko's domestic market collection. It features a Blue Sunburst dial protected by a Hardlex crystal and offers 160m of water resistance. [seikata-wm-22e04f4aa1ef]

Also known as: Helmet

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

44mm

Case Thickness

12.8mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Blue Sunburst

Jewels

25j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1967

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