Seiko Cal. 6657 - 911

The Seiko 6657-911 represents an important milestone in Seiko's 1983 lineup. With its 18mm lug width and 9.0mm profile, it sits comfortably on most wrists. [seikata-wm-2ea5b2ed47e3]

Also known as: Sportsmatic

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

39mm

Case Thickness

9.0mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Champagne

Jewels

31j

Frequency

36,000 bph

Power Reserve

62 hours

Year

1983

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