Seiko Cal. 4487 - 891

The Seiko 4487-891 represents an important milestone in Seiko's 1986 lineup. It features a White dial protected by a Acrylic crystal and offers 140m of water resistance. [seikata-wm-9fa1a8204cdf]

Also known as: Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

11.9mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

140m

Dial Color

White

Jewels

19j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1986

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