Seiko Cal. 3899 - 930

The 3899-930 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 3899 caliber with 17j jewels beating at 21,600 bph, it delivers a 60 hours power reserve. [seikata-wm-ea8f2fec7759]

Also known as: Sportsmatic, Golden Tuna

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

14.8mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Navy

Jewels

17j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1971

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