The speak has 4 hour playtime powered by a built-in high capacity Li-ion battery and industry-leading power management technology.The bluetooth speaker supports bluetooth connection,3.5mm AUX cable and high capacity TF card.You can enjoy music for multiple connection ways.Experience your music in full-bodied stereo realized through high-performance drivers.You can enjoy music with this small wireless bluetooth speaker outdoors.Compatible with all Bluetooth-enabled devices.