Seiko Cal. 4477 - 640

This Hand-Winding model from 1977 features a 34mm Hardlex-Coated Steel case. Powered by the 4477 caliber with 29j jewels beating at 21,600 bph, it delivers a 60 hours power reserve. [seikata-wm-7c6771aeb869]

Also known as: Silverwave

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

12.3mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Cream

Jewels

29j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1977

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