Seiko Cal. 6390 - 903

This Automatic model from 1966 features a 38mm Two-Tone case. Powered by the 6390 caliber with 35j jewels beating at 36,000 bph, it delivers a 55 hours power reserve. [seikata-wm-2f207991d4c9]

Also known as: UFO

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

38mm

Case Thickness

15.5mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Black

Jewels

35j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1966

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