Seiko Cal. 6390 - 645

Seiko 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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