Seiko Cal. 6390 - 904

The Seiko 6390-904 represents an important milestone in Seiko's 1985 lineup. It features a Champagne dial protected by a Sapphire crystal and offers 50m of water resistance. [seikata-wm-0534f1a69023]

Also known as: Monster, Baby Tuna

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

12.2mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Champagne

Jewels

29j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1985

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