Seiko Cal. 6633 - 353

Released in 1972, the Cal. 6633 with design code 353 was part of Seiko's domestic market collection. It features a Black dial protected by a Hardlex crystal and offers 80m of water resistance. [seikata-wm-b8e9bd8ab888]

Also known as: Helmet, Rally

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

12.2mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Black

Jewels

17j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1972

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