Seiko Cal. 6390 - 776

Released in 1965, the Cal. 6390 with design code 776 was part of Seiko's domestic market collection. Powered by the 6390 caliber with 36j jewels beating at 36,000 bph, it delivers a 51 hours power reserve. [seikata-wm-bcf5137605ed]

Also known as: Tuna

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

10.9mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

White

Jewels

36j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1965

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