abcGOODefg&reg; Portable Mini Wireless Bluetooth Speakers Metal Steel Wireless Smart Hands Free Speaker With FM Radio Support SD Card For iPhone Samaung HTC Ericsson SONY Blackberry and other Support bluetooth Smartphone iPad Air/ Mini Ipod ect (Gold) Wireless Bluetooth Speaker Support Answer Calling and TF Card,Support Mobile Phone/Laptop/Tablet PC Support TF card(micro SD TF card)with TF card slot,can play MP3 format files in the TF card Larger 45mm driver delivers precise highs for superb sound,with a variety of color can choose Expanded Bass Xpansion system drives a fuller richer low-end response,Built in rechargeable battery,charged by computer via USB interface