Model BYL-918 Quantity 1 Color Black Bluetooth Version 2.1 Operating Range 10 meter Compatibility TV MP3 MP4 Ipad Iphone4 Iphone3G/3GS and other cell phones with Bluetooth function Microphone No Radio N/A Supports Music Format MP3 Power Supply Built-in Battery Other Features Suitable for your speaker with 3.5mm audio jack turn your wired speaker to a Bluetooth speaker; With Mini USB port 3.5mm audio plug; Charging time: 2 hours; Play time: 5.5 hours; Standby time: 70 hours Packing List 1 x Bluetooth V2.1 Audio Receiver Dongle 1 x USB male to Mini USB male cable (63cm) 1 x 3.5mm female to female adapter