Seiko Cal. 6389 - 431

The Seiko 6389-431 represents an important milestone in Seiko's 1990 lineup. It features a Black dial protected by a Hardlex crystal and offers 90m of water resistance. [seikata-wm-e8c2f5408615]

Also known as: Helmet

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

46mm

Case Thickness

13.5mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Black

Jewels

33j

Frequency

36,000 bph

Power Reserve

65 hours

Year

1990

Related Models

• Seiko 7168-682
• Seiko 0752-255
• Seiko 3863-420
• Seiko 4551-583
• Seiko 7168-733
• Seiko 7090-989
• Seiko 6647-479
• Seiko 7171-662
• Seiko 6257-173
• Seiko 6371-777
• Seiko 6672-531
• Seiko 3877-560