Seiko Cal. 6390 - 135

The Seiko 6390-135 represents an important milestone in Seiko's 1965 lineup. Powered by the 6390 caliber with 31j jewels beating at 28,800 bph, it delivers a 72 hours power reserve. [seikata-wm-6a464e4048cf]

Also known as: Shogun, Baby Tuna

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

34mm

Case Thickness

12.6mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

200m

Dial Color

White

Jewels

31j

Frequency

28,800 bph

Power Reserve

72 hours

Year

1965

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