Seiko Cal. 6661 - 334

The 6661-334 is a sought-after Spring Drive piece from Seiko's golden era. The Inner Rotating bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-7f68ff1ef957]

Also known as: Monster, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

45mm

Case Thickness

9.0mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Silver

Jewels

29j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1970

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