Seiko Cal. 0733 - 557

This Automatic model from 1978 features a 38mm Hardlex-Coated Steel case. It features a Black dial protected by a Acrylic crystal and offers 140m of water resistance. [seikata-wm-de0453d09361]

Also known as: Helmet, Arnie

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

10.2mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Black

Jewels

21j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1978

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