Airfrex AIU5 portable audio adapter is one of the smallest and most powerful wireless Bluetooth converters in the Bluetooth Connector category. It is easy for the users to perceive the superior quality in both eye-catching premium design and unrivaled audio performance. This wireless receiver adopted the most advanced CSR Bluetooth chip and latest Texas Instrument headphone amplifier while most other low end brands uses low end Bluetooth version with cheap black plastic housing. Due to the powerful chipsets inside, AIU5 offers an unrivaled audio performance experience and other unmatchable features as below: A--- Wider wireless Bluetooth Range, AIU5 mini Bluetooth receiver has a stronger and more stable wireless signal, so there is no cutting in and out, no breaking up within 33 feet range. B--- Faster paring time and automatically repairing, normally the paring is done in seconds, once it has been paired, it will be automatically paired again. C---Battery consumption indicator on iOS system, it shows the percentage of the battery remains on iOS system. Note 1: Airfrex Bluetooth Car Audio doesn’t automatically turn on itself, you need to single press the button until the led light flashing blue and red, then you can find it on your Bluetooth devices such as smart phones / tablets / computers / pc / laptop or MP3/ CD music player with Bluetooth transmitter function. 2: During charging, long press the button until the led light is flashing blue and red, then find and pair our Bluetooth connector with your device. This way, you can play but meanwhile charge this wireless connector. Airfrex Bluetooth jack supports using while charging, it is a perfect choice to turn your car stereo into wireless by streaming the music from your phone. Since our mini Bluetooth receiver has microphone built inside, user can pick up any phone call by a simple press on the button and enjoy hands-free call while driving.