Seiko Cal. 4531 - 312

The 4531-312 is a sought-after Automatic piece from Seiko's golden era. The Bidirectional bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-1b203efc53ed]

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

37mm

Case Thickness

14.9mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Green

Jewels

30j

Frequency

28,800 bph

Power Reserve

68 hours

Year

1969

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