2 in 1 Wireless Bluetooth 5.0 Receiver Transmitter Adapter 3.5mm Jack For Car Music Audio Aux A2dp Headphone Reciever HandsfreeThis music receiver(hands-free) is designed to receive music from mobile phones  or transmitters that feature Bluetooth wireless technology.The music receiver can be used with almost any audio receiver with an audio input jack,including automobiles.Listen to music from your smart phone or mp3 player on your existing home or car audio system.To enjoy car music,call solutions,the use of smart phones to make calls and listen to music through the car stereo.The product is embedded echo cancellation microphone.Using only one button,you can easily switch between music and phone.Compatible:All bluetooth enabled devices: Smartphone and laptops like iPhone, iPad, iPad  Mini, iPod, Samsung, Sony, HTC, Blackberry and docks & speakers like Bos e,  Roberts, J B L, Samsung, Pure, Sony, Phillips, B&W, Klipsch, etc.Such as:iPhone 3G, 3GS, 4, 4s, 5, 5c and 5s, 6, 6 PlusiPad 1, 2, 3, 4, Air, Mini1 and 2Laptop and PC with bluetooth 2.1 and aboveSamsung, HTC, etc, all other Android 2.1 (and above) devices with BluetoothSmart-phone with Bluetooth 2.1 & aboveSpecification:Bluetooth: v2.1+EDR, Class 2Bluetooth hands-freeBluetooth stereo audio profile:A2DPTransmission Distance: up to 10mOperation time: up to 8 hoursFrequency: 2.4GHz3.5mm stereo audio outputColor: BlackNet Weight:19g Dimension: 55x25x10mmFeatures:High-performance,support A2DP V1.2 stereo profile.Simple operation,connect speakers and receiver by 3.5mm audio connector.Widely use with home AV systems, home stereos, headphones, automobile or  motorcycle speakers and more.Powered by built-in rechargeable li-ion battery via micro USB port, long working time and low consumption. (Micro USB cable included) Sleep mode for energy savingMake your Car AUX audio sytem and Home Theater AV HiFi Surrounding system become bluetooth compatible, get music from Bluetooth enable device such as iPhone, iPad, iPod, HTC Samsung Smart cellphone or Bluetooth PC, Laptop.Simply connect this bluetooth audio receiver to your line-in or auxiliary input on your speakers, pair it to your Bluetooth enabled device, and enjoy the wireless music revolution.Simple operation,3.5mm Male to Male Audio Connector or 3.5mm Male to Male Audio Cable to connect the speakers and the receiver. Whether you want Bluetooth convenience in your car, through your home-theater system, in your kitchen, bathroom, or bedroom,etc.High-performance AMP chip,can push the headset,and high-power speaker,applicable to all types of speakersPowered by built-in rechargeable li-ion battery via mini USB port , long working time and low consumption. (Mini USB cable included)Powerful bluetooth IC,More stronger compatibilityYou can play music through your car stereo and answer phone call via the built-in Mic. Product viewCharging1. Using the supplied USB cable, connect the small end to the mini-USB input of the music receiver2. Connect the other end to the USB input of your PC, laptop or USB power converter,The music receiver's LED light will glow red during charging.3. When charging is finished, the red LED will turn off. A full charge will provide up to 8 hours of play time.If this is the first time you use this device,please pair this device first.1. To enter pairing mode, press and hold the on/off button(button1)for 5seconds until both red and blue LEDS flash.2. Search for the music receiver on your mobile phone or compatible transmitter.Touch and hold one button to power on and it will automatically search for a compatible transmitter;No andy codes to enter if connect with Apple or Android device,LED lights beneath the button indicate device and charging status.3. The devices should now recognize each other and pair. The LED on the music receiver will slowly flash blue after successful paring.4. To complete pairing some devices require a pass key or code, please enter "0000"5. Once successfully paired, the devices can be powered off. To re-connect simply power them both on, no need to pair again.Playing Music1. Using the supplied audio cables and adapters,connect the music receiver to the auxiliary(AUX) input of your home or car stereo.2. Make sure the transmitter (Mini-jack,mobile phone, PC, PAD OR compatible source) is turned on and paired with the music receiver and that the devices are no more than 10m apart.3. The blue LED on the music receiver will flash slowly, indicating a connection4. Press "play" and the music will be sent wireless to the music receiver.Note: If you cannot hear the musica. Make sure your stereo system is set to "AUX" input or whichever input is the corresponding input to the music receiver.b. Check and make sure the volume is not turned down or muted.Hands-free:1. Default your phone using Bluetooth microphone, telephone access to the speakerphone comes MIC.2. Phone calls ,you can press the key (button1) to open to answer a voice call3. After the completion of the call, the phone cuts into the state before automatically.4. Disconnect after one minute, the Bluetooth device will shut down.Visual Indicators:1. Pairing or establishing a connection: The red and blue LED flash altematively.2. Connected and playing: The blue LED flashes once every 1 second.3. Sleep mode: The blue LED flashes once every 5 seconds.4. Charging: Solid red.5. Charging and connected: Solid red and the blue LED flashes every 1 second.