Seiko Cal. 6647 - 878

This Hand-Winding model from 1969 features a 44mm Hardlex-Coated Steel case. Powered by the 6647 caliber with 33j jewels beating at 21,600 bph, it delivers a 72 hours power reserve. [seikata-wm-bc241c26f4ba]

Also known as: Monster, Rally

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

9.3mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

180m

Dial Color

Champagne

Jewels

33j

Frequency

21,600 bph

Power Reserve

72 hours

Year

1969

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