product description: 1. Stereo Bluetooth: Bluetooth mobile phone after the match, the phone can play music, no external source; 2. Hands-free features: built-in microphone, matching cell phone hands-free communication, to avoid the restrictions of the new traffic law; 3. To charge the phone: the player has a USB mobile phone charging interface, the output voltage and current of 5V / 2.1A, for all mobile phones and tablet charging can be achieved while charging while listening to music; 4. No matching frequency: using the AUX design 3.5mm audio output interface, direct connection to the car's AUX interface can be, to avoid breaking the sound, the noise problems caused by frequency interference caused; 5. Wide voltage design: support the size of the voltage 12-24V, widely applicable. Specifications: 1), Bluetooth 3.0 standard (support A2DP; AVRCP) 2), audio transmission: lossless transmission, standard 3.5mm audio output 3) compatibility: Bluetooth version 4) Application: All car stereo with AUX IN audio input function 5), Bluetooth hands-free function 6), support for common functions Control functions (such as Play / Pause; a song; the next song, etc.) 7), key backlight design, easy operation 8), 5V / 2.1A output Electrical indicators: 1) Input: 12 ~ 24V 2), output: 5V / 2.1A 3), SNR:> 92dB 4), THD: <0.05% 5), Frequency Response: 20Hz ~ 20KHz Instructions for use: Pairing your phone Press and hold the "Play / Pause / Answer" key until the indicator light flashes about. On your phone, go to the Bluetooth settings menu Make sure Bluetooth is turned on. On the phone, so the Bluetooth feature to search for a new connection Select "BC10 AUDIO" from searching out the list of devices After matching success, the indicator light on the surface of the shell will become stable steady Some phones will ask whether you want to connect, select "Yes" There can be only one phone at any time and "BC10 AUDIO" match to match different phones, please repeat the above steps for the match. BC10 AUDIO final match will take precedence connected phone. Daily Use everyday use To connect to a BC10 AUDIO, please: As you are through Bluetooth headsets or listening to music, switch off the headset to the phone can be connected to BC10 AUDIO Open car audio system and select the input source signal transferred to the audio input Make sure BC10 AUDIO is energized: the LED on the button is lit significant Press the Play / Pause, BC10 AUDIO will attempt to reconnect to the same phone connected its last Amplifier connection is successful, the LED will turn left and right buttons stable steady state. If you are on a call or listening to music, the audio will be transferred to the on-board speaker.