Seiko Cal. 6390 - 422

The Seiko 6390-422 represents an important milestone in Seiko's 1985 lineup. Powered by the 6390 caliber with 30j jewels beating at 36,000 bph, it delivers a 44 hours power reserve. [seikata-wm-1084093daf4c]

Also known as: Shogun, Tuna

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

42mm

Case Thickness

9.3mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Burgundy

Jewels

30j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1985

Related Models

• Seiko 4448-586
• Seiko 6621-884
• Seiko 6362-598
• Seiko 3877-798
• Seiko 6369-727
• Seiko 7058-204
• Seiko 5614-653
• Seiko 6175-114
• Seiko 5640-637
• Seiko 4513-840
• Seiko 6111-341
• Seiko 3894-326