Seiko Cal. 6630 - 551

The Seiko 6630-551 represents an important milestone in Seiko's 1965 lineup. Powered by the 6630 caliber with 20j jewels beating at 28,800 bph, it delivers a 56 hours power reserve. [seikata-wm-e9af6ab0a9ca]

Also known as: Shogun

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

37mm

Case Thickness

13.7mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Blue Sunburst

Jewels

20j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1965

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