Seiko Cal. 6618 - 631

The 6618-631 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6618 caliber with 18j jewels beating at 21,600 bph, it delivers a 63 hours power reserve. [seikata-wm-728f72c9e0ad]

Also known as: Samurai, Rally

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

13.9mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

120m

Dial Color

Cream

Jewels

18j

Frequency

21,600 bph

Power Reserve

63 hours

Year

1975

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