Seiko Cal. 4487 - 748

This Hand-Winding model from 1998 features a 40mm Titanium case. It features a Black dial protected by a Hardlex crystal and offers 180m of water resistance. [seikata-wm-9b1c59cac77e]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

40mm

Case Thickness

11.5mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Black

Jewels

35j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1998

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