Creative Sound Blaster Free Multifunction Portable Bluetooth Speaker, Built-In MP3 Player with MicroSD (White) Massive, full bodied sound - 40mm neodymium drivers with dual passive radiators Built-in media and voice controls with Loud Mode - features discreet Omni-directional mic USB port for USB audio streaming via PC or Mac Bluetooth 4.0 with SBC and Fast Stream Playtime of up to 10 hours