Seiko Cal. 4490 - 740

This Automatic model from 1967 features a 44mm Hardlex-Coated Steel case. Powered by the 4490 caliber with 31j jewels beating at 36,000 bph, it delivers a 66 hours power reserve. [seikata-wm-a87893a702a7]

Also known as: Silverwave

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

12.9mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Blue Sunburst

Jewels

31j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1967

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