Seiko Cal. 5284 - 978

This Hand-Winding model from 1985 features a 40mm PVD Black case. Powered by the 5284 caliber with 22j jewels beating at 28,800 bph, it delivers a 46 hours power reserve. [seikata-wm-ed252e078d04]

Also known as: Crown

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

40mm

Case Thickness

9.4mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Green

Jewels

22j

Frequency

28,800 bph

Power Reserve

46 hours

Year

1985

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