Seiko Cal. 4531 - 720

The 4531-720 is a sought-after Automatic piece from Seiko's golden era. The Coin-Edge bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-fe1eaff5609b]

Also known as: Sumo

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

42mm

Case Thickness

10.1mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

White

Jewels

34j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1992

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