Seiko Cal. 6660 - 413

The 6660-413 is a sought-after Spring Drive piece from Seiko's golden era. With its 18mm lug width and 13.4mm profile, it sits comfortably on most wrists. [seikata-wm-41fab655f0f6]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

34mm

Case Thickness

13.4mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

31j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1967

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