Seiko Cal. 6669 - 957

This Spring Drive model from 1980 features a 40mm Titanium case. Powered by the 6669 caliber with 29j jewels beating at 28,800 bph, it delivers a 40 hours power reserve. [seikata-wm-76685cb303aa]

Also known as: Monster, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

40mm

Case Thickness

8.7mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Green

Jewels

29j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1980

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