Seiko Cal. 6390 - 863

The 6390-863 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6390 caliber with 30j jewels beating at 28,800 bph, it delivers a 68 hours power reserve. [seikata-wm-45c4fa43d7aa]

Also known as: Sumo, Pogue

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

14.5mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Cream

Jewels

30j

Frequency

28,800 bph

Power Reserve

68 hours

Year

1990

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