Seiko Cal. 5664 - 303

The 5664-303 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 5664 caliber with 34j jewels beating at 36,000 bph, it delivers a 71 hours power reserve. [seikata-wm-194305eca6da]

Also known as: Sumo, Helmet

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

38mm

Case Thickness

11.3mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

White

Jewels

34j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1979

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