The Movado 166 is an automatic watch movement that does not feature manual winding. It utilizes Seiko-Diafix combined settings for the escape wheel and 3rd wheel, along with a ball-bearing rotor. This movement incorporates a sophisticated excenter self-winding mechanism with just one gear stage. Key functions of the Movado 166 include a sweep second hand, a day of the week calculating disc set by a pusher at 2 o'clock, and a date function that is quickset. This movement was primarily used around the year 1992.