Tecsun B3 Portable Rechargeable Bluetooth Speaker with Built-in Micro SD Card Reader, Famous Tescun Radio Seris Wirelessly streaming music from any Bluetooth-enabled device such as a cell phone, laptop, iPhone or iPad with a range of up to 30 feet 1 1/2" full range driver delivers powerful, dynamic bass and distortion-free sound Built-in battery charger with included USB charging cable and earphone jack for private listening MP3 music player with built-in Micro SD / TF card reader (8GB maximum) Stylish design with compact size and light weight