Seiko Cal. 7155 - 683

Released in 1974, the Cal. 7155 with design code 683 was part of Seiko's domestic market collection. It features a Navy dial protected by a Hardlex crystal and offers 120m of water resistance. [seikata-wm-dedbe6df18ab]

Also known as: Helmet, World Timer

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

43mm

Case Thickness

8.9mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Navy

Jewels

22j

Frequency

21,600 bph

Power Reserve

52 hours

Year

1974

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