Seiko Cal. 6390 - 133

The 6390-133 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6390 caliber with 31j jewels beating at 36,000 bph, it delivers a 72 hours power reserve. [seikata-wm-c41229a73124]

Also known as: World Timer

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

34mm

Case Thickness

15.6mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

80m

Dial Color

Black

Jewels

31j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1991

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