Seiko Cal. 6631 - 524

The 6631-524 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6631 caliber with 35j jewels beating at 36,000 bph, it delivers a 72 hours power reserve. [seikata-wm-7173e535da4b]

Also known as: Arnie

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

38mm

Case Thickness

13.1mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

100m

Dial Color

White

Jewels

35j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1968

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