Seiko Cal. 6390 - 520

The Seiko 6390-520 represents an important milestone in Seiko's 1973 lineup. It features a White dial protected by a Hardlex crystal and offers 180m of water resistance. [seikata-wm-26d6a12f5753]

Also known as: Golden Tuna

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

34mm

Case Thickness

8.3mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

White

Jewels

23j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1973

Related Models

• Seiko 7083-930
• Seiko 6324-809
• Seiko 6271-767
• Seiko 6633-589
• Seiko 7082-412
• Seiko 3840-207
• Seiko 5214-694
• Seiko 6184-973
• Seiko 6686-574
• Seiko 7057-995
• Seiko 0744-222
• Seiko 6243-975