Seiko Cal. 6636 - 161

The 6636-161 is a sought-after Automatic piece from Seiko's golden era. With its 18mm lug width and 8.5mm profile, it sits comfortably on most wrists. [seikata-wm-909cbc4aef2b]

Also known as: Sportsmatic

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

8.5mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

40m

Dial Color

Navy

Jewels

36j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1989

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