Seiko Cal. 6331 - 201

This Automatic model from 1979 features a 44mm Titanium case. It features a Navy dial protected by a Sapphire crystal and offers 140m of water resistance. [seikata-wm-0a5bd4b0df0e]

Also known as: Sumo, Silverwave

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

44mm

Case Thickness

10.2mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

140m

Dial Color

Navy

Jewels

23j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1979

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