Seiko Cal. 0740 - 423

The Seiko 0740-423 represents an important milestone in Seiko's 1974 lineup. With its 20mm lug width and 13.1mm profile, it sits comfortably on most wrists. [seikata-wm-2f2ca621fd3f]

Also known as: Golden Tuna

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

39mm

Case Thickness

13.1mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

30m

Dial Color

Navy

Jewels

31j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1974

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