Seiko Cal. 6633 - 256

This Hand-Winding model from 1978 features a 46mm Titanium case. It features a Navy dial protected by a Acrylic crystal and offers 150m of water resistance. [seikata-wm-8cfcc9392fde]

Also known as: Sumo, Emperor

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

46mm

Case Thickness

12.6mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

150m

Dial Color

Navy

Jewels

27j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1978

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