Seiko Cal. 0742 - 931

Released in 1976, the Cal. 0742 with design code 931 was part of Seiko's domestic market collection. It features a White dial protected by a Hardlex crystal and offers 190m of water resistance. [seikata-wm-dc716366d1be]

Also known as: Helmet, Rally

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

12.3mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

White

Jewels

19j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1976

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