Bluetooth Audio receiver Music player dongle adapter for PC speakers Car MP3 player, Music Hi Fi System, Home Theatre. Turn any speaker into a Wireless Bluetooth speaker Play songs from your phone directly to Music systems and home theatre Works with all mobile phones with Bluetooth, Compatible with any PC speaker system, TV, amplifier, Car cassette or MP3 player, Music Hi fi deck or Home theatre systems. If your Car MP3 player, HI FI system or home theatre does not have USB port you can use any USB charger to plug this adapter. And if the Hi Fi Music system, Home theatre does not have AUX port you can use 3.5mm to RCA cable. (Need to purchase separately) Range: Up to 10 meters Instructions for use: 1. Insert the receiver into any available USB interface or Any USB charger. 2. Connect AUX cable 3. Open the Bluetooth-enabled mobile phone, and pair with this adapter 4. Play music in phone then you can enjoy the music wireless.