Seiko Cal. 6613 - 551

The Seiko 6613-551 represents an important milestone in Seiko's 1977 lineup. Powered by the 6613 caliber with 27j jewels beating at 21,600 bph, it delivers a 63 hours power reserve. [seikata-wm-1ab89573cf96]

Also known as: Rally, Emperor

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

14.5mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Blue Sunburst

Jewels

27j

Frequency

21,600 bph

Power Reserve

63 hours

Year

1977

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