Seiko Cal. 6390 - 774

The 6390-774 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Blue Sunburst dial protected by a Mineral crystal and offers 110m of water resistance. [seikata-wm-7a9f30ef71ad]

Also known as: UFO, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

12.4mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Blue Sunburst

Jewels

35j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1976

Related Models

• Seiko 5686-323
• Seiko 7013-190
• Seiko 5650-371
• Seiko 6178-601
• Seiko 5618-838
• Seiko 6122-376
• Seiko 6681-211
• Seiko 4554-134
• Seiko 6666-322
• Seiko 3873-157
• Seiko 7146-155
• Seiko 5677-561