Seiko Cal. 6131 - 899

The 6131-899 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6131 caliber with 32j jewels beating at 28,800 bph, it delivers a 38 hours power reserve. [seikata-wm-dead1df405ce]

Also known as: Sportsmatic, Crown

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

38mm

Case Thickness

14.3mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Champagne

Jewels

32j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1978

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