Seiko Cal. 6390 - 340

Released in 1972, the Cal. 6390 with design code 340 was part of Seiko's domestic market collection. With its 18mm lug width and 14.6mm profile, it sits comfortably on most wrists. [seikata-wm-7ff66ed4299d]

Also known as: Navigator, Sea Horse

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

14.6mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

30m

Dial Color

Navy

Jewels

24j

Frequency

28,800 bph

Power Reserve

45 hours

Year

1972

Related Models

• Seiko 4545-435
• Seiko 7116-606
• Seiko 5244-283
• Seiko 6687-209
• Seiko 3833-623
• Seiko 3845-586
• Seiko 6660-364
• Seiko 6365-891
• Seiko 0766-422
• Seiko 6644-259
• Seiko 6143-156
• Seiko 3881-948