Includes Advent transmitter and three wireless Advent speakers (all of which are accompanied by their OEM power supplies), two of which are the Model K965 two way units (measure approx. 10.5” high x 7” wide x 6.5” long) and one of which is the indoor/outdoor water resistant unit, Model 1682K965 (measures 8.5” high x 7” x 8.5”, approx.), also runs on batteries