Mp3 player - Wireless Connectivity - USB input - TF Card - Radio Receiver - Buit-in Battery SPECIFICATION - Product Model - BSPOWER - Dimension(main body) - 76x78x94 mm - Net Weight - 190 g - Speaker - 3W,50mm - Playback Time - Up to 3 hours - Battery Capacity - 500mAh - Charging Voltage - 5V USB port Handling and Packing: Packing done with good amount of care so that you get the item in good condition. it is your responsibility to ensure that the packet received is in non-tampered condition. If the pack is open please refuse to receive the order and return it with same logistics person 100% Tested product.