Seiko Cal. 6661 - 356

This Spring Drive model from 1985 features a 45mm Hardlex-Coated Steel case. With its 20mm lug width and 14.8mm profile, it sits comfortably on most wrists. [seikata-wm-aab1a715ebfb]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

14.8mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

160m

Dial Color

Silver

Jewels

28j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1985

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