This is a Bluetooth audio receiver, which can be connected to your car stereo / home stereo or other audio device via 3.5mm AUX audio interface, play music and answer calls, it is applicable to any Bluetooth-enabled mobile phones. 
With this device, you can play music & answer phone call in your car or through your own stereo from your smartphone, MP3, tablet, etc. The best wireless experience ever! 

Main Feature: 
1.Supports Bluetooth V3.0+EDR and Bluetooth 2.1,2.0,1.2,and 1.1 backward compatibility. 
2.Frequency range 2404MHz-2480MHz. 
3.Support AVRCP 1.0,A2DP 1.0,Hands-Free Profile 1.5,Headset Profile V1.1. 
4.Operating range 10m-20m(Depending on environment). 
5.75 dB SNR DAC playback. 
6.3.5mm audio out. 
7.Can answer calls. 
8.Super low power charge standby. 
9.LED indicator. 
10.Micro USB charging. 
11.Built-in high capacity li-Polymer battery. 

How to use: 
1 Plug the device into car audio equipment or other audio equipment 
2 Press the Bluetooth button for 5 seconds to boot, until the red light flashes 
Locate the Bluetooth devices on your phone or tablet PC, select Pair 
5 answer the phone: When there is telephone access, press the Bluetooth button to answer 
6 refused Tel: Short press the Bluetooth button 2 seconds reject calls 
7 consecutive short press the Bluetooth button to redial the last call number 

Accessories: 
Bluetooth hands-free 1pcs 
usb charging cable 1pcs 
User's Manual 1pcs 
Retail package 

• Wireless Bluetooth Car Kit: Connect your car AUX Jack, connect the wireless transmission of music and answer calls with your phone
• Wireless Bluetooth Audio Receiver: connected home speakers, and the phone is connected to a wired speakers into wireless Bluetooth speakers, you can answer the call
• Supports For iPad, iPhone, iPod Nano, iPod Touch, Samsung Galaxy smart phones and other Bluetooth devices; support for hands-free calls & music appreciation.
• Simple operation: Simple and easy wireless set-up, automatically connect, normal speaker become hands-free bluetooth speaker magically, portable bluetooth car receiver
• Can connect to 2 devices at the same time.