Seiko Cal. 7188 - 643

Released in 1966, the Cal. 7188 with design code 643 was part of Seiko's domestic market collection. It features a Navy dial protected by a Hardlex crystal and offers 150m of water resistance. [seikata-wm-ef925675ab6a]

Also known as: Helmet, Arnie

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

14.9mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Navy

Jewels

32j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1966

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