Seiko Cal. 4523 - 734

The Seiko 4523-734 represents an important milestone in Seiko's 1970 lineup. With its 18mm lug width and 11.2mm profile, it sits comfortably on most wrists. [seikata-wm-8506cec98b0b]

Also known as: Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

40mm

Case Thickness

11.2mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Blue Sunburst

Jewels

34j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1970

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