This small mushroom head shape speaker is portable for outdoors and indoors. It has a micro USB interface, output power of 3W, 3.7V battery inside. Effective wireless transmission distance to 10 meters. Creative mini cartoon multi-functional phone stand and speaker device. Great for travel, office, computer, home and outdoor events, provide a gift that allows users to listen to music, watch movies, play games and provide high definition music at conference meetings and gatherings. Pick from various colors and seek out new customers at college events, tradeshows, and retail stores with this cute keepsake!