Seiko Cal. 6633 - 909

The 6633-909 is a sought-after Spring Drive piece from Seiko's golden era. It features a Cream dial protected by a Acrylic crystal and offers 50m of water resistance. [seikata-wm-68b51decf75a]

Also known as: Monster, Bullhead

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

10.7mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Cream

Jewels

24j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1977

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