Seiko Cal. 4489 - 820

This Automatic model from 1988 features a 36mm Hardlex-Coated Steel case. Powered by the 4489 caliber with 35j jewels beating at 36,000 bph, it delivers a 72 hours power reserve. [seikata-wm-2820e22f1f49]

Also known as: Silverwave, Sportsmatic

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

12.8mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

60m

Dial Color

Burgundy

Jewels

35j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1988

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