Seiko Cal. 6390 - 853

The Seiko 6390-853 represents an important milestone in Seiko's 1965 lineup. Powered by the 6390 caliber with 22j jewels beating at 21,600 bph, it delivers a 70 hours power reserve. [seikata-wm-f497f9ba72ff]

Also known as: Helmet, Flighty

Specifications

Movement

Solar

Case Material

Titanium

Case Width

42mm

Case Thickness

10.7mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Cream

Jewels

22j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1965

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