Seiko Cal. 4550 - 842

This Hand-Winding model from 1980 features a 41mm Stainless Steel case. Powered by the 4550 caliber with 27j jewels beating at 21,600 bph, it delivers a 61 hours power reserve. [seikata-wm-700a8978d2ec]

Also known as: Silverwave, Crown

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

13.7mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Green

Jewels

27j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1980

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