Seiko Cal. 6390 - 645

The 6390-645 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6390 caliber with 29j jewels beating at 36,000 bph, it delivers a 40 hours power reserve. [seikata-wm-f4d73cab2be4]

Also known as: Sea Horse

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

8.7mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Silver

Jewels

29j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1966

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