Seiko Cal. 6656 - 166

The Seiko 6656-166 represents an important milestone in Seiko's 1978 lineup. With its 20mm lug width and 9.9mm profile, it sits comfortably on most wrists. [seikata-wm-13daaba3ce7c]

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

9.9mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Navy

Jewels

19j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1978

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