Seiko Cal. 6390 - 505

The Seiko 6390-505 represents an important milestone in Seiko's 1965 lineup. Powered by the 6390 caliber with 20j jewels beating at 36,000 bph, it delivers a 37 hours power reserve. [seikata-wm-985d9d2bf2d7]

Also known as: World Timer

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

15.1mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

90m

Dial Color

Cream

Jewels

20j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1965

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