Seiko Cal. 6631 - 386

The 6631-386 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6631 caliber with 27j jewels beating at 28,800 bph, it delivers a 62 hours power reserve. [seikata-wm-2bc58ab373f5]

Also known as: World Timer

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

15.4mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Burgundy

Jewels

27j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1997

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