Stereo Wireless Bluetooth. Speakerphone function, with built-in mic. Wireless chraging for smartphone (must be Qi enabled device) Android APP smartphone controls. Pure music with improved bass. FM Radio mode. Simple to operate. Specifications: Bluetooth 3.0V, up to 10 m Play time 4-8 hours, Charging time: 3-4 hours. What's in the box 1x speaker 1x Usb cable