The Kienzle 089/40 watch movement is an automatic movement featuring a ball-bearing rotor and two roller freewheels. It incorporates a worm screw regulation gear and is based on the manual wind calibre AS 1687/1688. The automatic mechanism is a collaboration between Doxa, Eberhard, Favre-Leuba, Girard-Perregaux, and Zodiac. The specific differences between the 42.0, 42.1, and 42.4 are unknown. This movement offers automatic winding, a sweep second hand, a date function set by adjusting the 20:40-24h, a hack feature, stop seconds function, and a sweep seconds hand. It is a period movement used around 1970.