Seiko Cal. 4431 - 398

This Hand-Winding model from 1997 features a 34mm Hardlex-Coated Steel case. It features a Burgundy dial protected by a Acrylic crystal and offers 100m of water resistance. [seikata-wm-d59ff3d88d4b]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

8.1mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Burgundy

Jewels

21j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1997

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