Seiko Cal. 4490 - 231

This Hand-Winding model from 1988 features a 40mm Hardlex-Coated Steel case. Powered by the 4490 caliber with 23j jewels beating at 28,800 bph, it delivers a 61 hours power reserve. [seikata-wm-6c95fe6cc180]

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

9.3mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

180m

Dial Color

Black

Jewels

23j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1988

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