Seiko Cal. 6658 - 945

This Spring Drive model from 1978 features a 46mm Two-Tone case. With its 18mm lug width and 15.0mm profile, it sits comfortably on most wrists. [seikata-wm-0b295f52c60c]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

46mm

Case Thickness

15.0mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

80m

Dial Color

Blue Sunburst

Jewels

29j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1978

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