Features : let normal speakers instantly wireless bluetooth stereo audio music speakers, bleutooth a2dp 2.0v support with 3.5mm audio output. Make instant bluetooth enabled car/home audio system, ideal for car, home audio system, can be paired to any bluetooth enabled devices, such as mobile phones, laptops, speakers and bluetooth audio transmitter. Leoxsys lb1 bluetooth dongle is the ideal accessory to give your speaker,music system or car audio system bluetooth capability instantly. Let ordinary speakers instantly become wireless bluetooth stereo audio music speakers using smart lb1 bluetooth audio adapter. Leoxsys lb1 can be paired to any bluetooth enabled devices, such as mobile phone, laptops, speaker and bluetooth audio transmitter. Make music in the audio equipment play by wireless instantly. To play music of iPad, iPhone, mobile phones, tablet pc, laptop or any bluetooth device on your speaker, home audio system, car audio system wirelessly. The audio signal is transmitted through bluetooth to this device. This device is connected to mini speaker, home audio, car audio system. This gives the freedom of listening your music loudly from your mobile device without clutters of wires. Instructions for use : plug the receiver adapter into any usb port for power supply and the other end connect with the 3.5mm audio cable to the line-in of the speakers. Turn on your speakers. Set volume to audible range, turn on the bluetooth-enabled mobile phone/your iphone/computer, and search for bluetooth device, look for the device called leoxsys and pair with it using code 0000, then the led light will slow down once pairing is successful, select and play music from your iPhone, smartphone , computer, your iphone now has a extra choice for output when your play music. Select the bluetooth device and enjoy the music from the speakers wireless. Specifications : bluetooth standard: bluetooth v2.0+edr, support a2dp v1.2, power supply : 5v usb, output : 3.5mm audio interface, bluetooth wireless distance : 5-10 meters, sound output rate : 44.1khz and 48khz, size: 54 x 22 x 11mm, audio cable length : 2 feet (60cm).