Seiko Cal. 4550 - 874

This Automatic model from 1972 features a 37mm PVD Black case. It features a Silver dial protected by a Sapphire crystal and offers 190m of water resistance. [seikata-wm-65fdde7145bb]

Also known as: Sumo, Sportsmatic

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

37mm

Case Thickness

9.0mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

Silver

Jewels

30j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1972

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