Seiko Cal. 4487 - 191

This Spring Drive model from 1988 features a 38mm Titanium case. It features a Navy dial protected by a Sapphire crystal and offers 90m of water resistance. [seikata-wm-c8460bc47931]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

38mm

Case Thickness

8.1mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Navy

Jewels

28j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1988

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