Tecsun B5 Wireless Bluetooth Speaker with Digtial Radio and MP3 Player - White Hi-Fi digital music player; support TF card; support music format: WAV, MP3, WMA, AAC, M4A, FLAC lossless. FM stereo; 87.0-108MHz Bluetooth receiver(2.4 GHz), able to receive and play the music or Internet programs sent from your phone or computer 3D sound effect Norminal output power: 5W2