Seiko Cal. 6658 - 109

This Spring Drive model from 1967 features a 43mm Gold-Plated case. With its 19mm lug width and 9.0mm profile, it sits comfortably on most wrists. [seikata-wm-258dae960d5d]

Also known as: Sportsmatic, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

9.0mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Burgundy

Jewels

29j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1967

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