Seiko Cal. 6390 - 407

Released in 1974, the Cal. 6390 with design code 407 was part of Seiko's domestic market collection. Powered by the 6390 caliber with 31j jewels beating at 36,000 bph, it delivers a 44 hours power reserve. [seikata-wm-8dff84ede12b]

Also known as: Golden Tuna

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

43mm

Case Thickness

10.0mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

90m

Dial Color

Navy

Jewels

31j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1974

Related Models

• Seiko 6257-917
• Seiko 6117-137
• Seiko 7061-529
• Seiko 0742-662
• Seiko 5686-216
• Seiko 0751-466
• Seiko 4513-782
• Seiko 0750-339
• Seiko 7089-477
• Seiko 4463-315
• Seiko 6332-959
• Seiko 4529-436