Seiko Cal. 6390 - 381

The Seiko 6390-381 represents an important milestone in Seiko's 1966 lineup. It features a Blue Sunburst dial protected by a Acrylic crystal and offers 160m of water resistance. [seikata-wm-2c4a49a2ee29]

Also known as: Emperor

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

37mm

Case Thickness

9.4mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

160m

Dial Color

Blue Sunburst

Jewels

20j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1966

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