Seiko Cal. 6647 - 323

This Hand-Winding model from 1974 features a 37mm PVD Black case. Powered by the 6647 caliber with 35j jewels beating at 36,000 bph, it delivers a 44 hours power reserve. [seikata-wm-c8cc9492b6e3]

Also known as: Monster

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

37mm

Case Thickness

13.1mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

70m

Dial Color

Blue Sunburst

Jewels

35j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1974

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