Seiko Cal. 6633 - 111

This Spring Drive model from 1966 features a 41mm Hardlex-Coated Steel case. It features a Cream dial protected by a Hardlex crystal and offers 40m of water resistance. [seikata-wm-ebd552055fb8]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

13.2mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Cream

Jewels

22j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1966

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