1.Can work with MP3, MP4, and USB, TF Card 3.Digital Display Function Mini loudspeaker with USB FM Radio Function remote control Including high capacity and security li ion battery with 3 years cycle time. Can be used as radio, with TF card socket, usb socket, microphone socket, audio input port and charging socket. Product Specification:Output power: 20WFrequency: 80Hz-12KHzBattery Capacity: ...