Seiko Cal. 6647 - 965

This Hand-Winding model from 1980 features a 40mm Stainless Steel case. It features a Blue Sunburst dial protected by a Hardlex crystal and offers 170m of water resistance. [seikata-wm-a6028f9317ad]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

11.6mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Blue Sunburst

Jewels

26j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1980

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