Seiko Cal. 4551 - 181

This Spring Drive model from 1983 features a 40mm PVD Black case. It features a Green dial protected by a Sapphire crystal and offers 180m of water resistance. [seikata-wm-45fd85dc7d79]

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

40mm

Case Thickness

15.3mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Green

Jewels

24j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1983

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