Seiko Cal. 6166 - 712

The 6166-712 is a sought-after Spring Drive piece from Seiko's golden era. With its 22mm lug width and 8.7mm profile, it sits comfortably on most wrists. [seikata-wm-b89affe6cf29]

Also known as: Monster, Bellmatic

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

8.7mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

30m

Dial Color

Blue Sunburst

Jewels

20j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1983

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