Seiko Cal. 6640 - 519

The Seiko 6640-519 represents an important milestone in Seiko's 1970 lineup. With its 19mm lug width and 13.4mm profile, it sits comfortably on most wrists. [seikata-wm-0f15e652865b]

Also known as: Golden Tuna, Baby Tuna

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

13.4mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Green

Jewels

21j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1970

Related Models

• Seiko 6197-818
• Seiko 6172-658
• Seiko 4496-767
• Seiko 7135-748
• Seiko 5628-918
• Seiko 5237-856
• Seiko 6213-418
• Seiko 6188-361
• Seiko 6614-162
• Seiko 4561-137
• Seiko 5239-817
• Seiko 6244-762