Seiko Cal. 6390 - 552

The 6390-552 is a sought-after Spring Drive piece from Seiko's golden era. It features a Black dial protected by a Acrylic crystal and offers 190m of water resistance. [seikata-wm-1a4adcd5c8f7]

Also known as: Turtle, Emperor

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

8.8mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

190m

Dial Color

Black

Jewels

17j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1988

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