Seiko Cal. 6651 - 631

This Automatic model from 1975 features a 43mm Hardlex-Coated Steel case. Powered by the 6651 caliber with 29j jewels beating at 21,600 bph, it delivers a 62 hours power reserve. [seikata-wm-6886a2afca99]

Also known as: Sumo, Silverwave

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

8.6mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Burgundy

Jewels

29j

Frequency

21,600 bph

Power Reserve

62 hours

Year

1975

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