Seiko Cal. 6390 - 763

The Seiko 6390-763 represents an important milestone in Seiko's 1973 lineup. It features a Black dial protected by a Acrylic crystal and offers 180m of water resistance. [seikata-wm-b6fd70e0053e]

Also known as: Silverwave, Baby Tuna

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

8.4mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

180m

Dial Color

Black

Jewels

25j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1973

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