Seiko Cal. 4531 - 775

Released in 1972, the Cal. 4531 with design code 775 was part of Seiko's domestic market collection. With its 22mm lug width and 15.1mm profile, it sits comfortably on most wrists. [seikata-wm-6c783ec4bf6e]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

43mm

Case Thickness

15.1mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

140m

Dial Color

Silver

Jewels

25j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1972

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