Seiko Cal. 5231 - 403

The Seiko 5231-403 represents an important milestone in Seiko's 1979 lineup. It features a White dial protected by a Acrylic crystal and offers 180m of water resistance. [seikata-wm-07d8798bdfc4]

Also known as: Sumo

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

9.2mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

White

Jewels

33j

Frequency

28,800 bph

Power Reserve

45 hours

Year

1979

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