Seiko Cal. 4550 - 987

This Spring Drive model from 1994 features a 36mm PVD Black case. Powered by the 4550 caliber with 22j jewels beating at 28,800 bph, it delivers a 60 hours power reserve. [seikata-wm-c7aa14c94980]

Also known as: Sumo, Pogue

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

36mm

Case Thickness

12.8mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Burgundy

Jewels

22j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1994

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