Seiko Cal. 6657 - 426

The Seiko 6657-426 represents an important milestone in Seiko's 1980 lineup. With its 20mm lug width and 15.4mm profile, it sits comfortably on most wrists. [seikata-wm-67187c989fb4]

Also known as: Baby Tuna

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

35mm

Case Thickness

15.4mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

150m

Dial Color

Cream

Jewels

32j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1980

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