Seiko Cal. 6390 - 640

This Kinetic model from 1977 features a 38mm Two-Tone case. Powered by the 6390 caliber with 23j jewels beating at 36,000 bph, it delivers a 56 hours power reserve. [seikata-wm-e1ba52bcac44]

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

38mm

Case Thickness

11.1mm

Lug Width

19mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

30m

Dial Color

Green

Jewels

23j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1977

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