Seiko Cal. 6621 - 561

The 6621-561 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6621 caliber with 31j jewels beating at 28,800 bph, it delivers a 56 hours power reserve. [seikata-wm-bb70210857dc]

Also known as: Helmet, World Timer

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

36mm

Case Thickness

11.3mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

130m

Dial Color

Black

Jewels

31j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1973

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