Bluetooth Adapter for Car, CHGeek 3.5mm AUX Input Dual USB Car Charger 5V/4.8A Hands Free Calling V4.2 Bluetooth Wireless Receiver Adapter for Home Car Stereo Audio System;

Multifunctional Bluetooth 4.2 Car Aux Adapter
Wireless Audio Receiver and Car Charger Combo Kit

A Must-have Handsfree Calling Device
Featuring Bluetooth 4.2 technology is used to provide a more stable connection. While driving, you can easily answer/hang up/decline/redial calls via one button.

1.Press MFB once to Answer/Hang off the phone call when there is incoming call.
2.Press MFB and hold 2 seconds to reject the phone call.
3.Press MFB twice to redial the last phone call.

Pair with Bluetooth Device Freely
1.The metal connector length of this receiver is 0.59 inch
2.Long press the MFB for 3 seconds, the LED light begins to flash and prompt with "Power on"
3.Turn on your Bluetooth enabled devices and pair with "BT09"
4.Turn on your music then you can enjoy the crystal audio sounds
5.Press MFB once to Play/Pause if you need it

Charge 2 USB Devices Simultaneously
Use the bottom part as a dual 2.4A USB port car charger fast charging for two device when driving, such as cell phones, ipad, etc.
MultiProtect Safety System is certified by RoHS, CE, and FCC.
The over load protection, overvoltage protection and more advanced safety protections keep all your devices safe.

Dual Battery Charging Solutions
1.Dual Battery Charging Solutions with two Touch Spots and Micro USB port. You can keep the music going around the clock when charging with the Micro USB.
2.With wireless magnetic charging technology, once two parts hooked up and plug the car charger to car lighter socket, its charging will start, but it can't work while charging in this way.

Long Lasting Battery Life
1. When the battery power is low, the relative prompt will appear and its status will also display on your phone.
2. After 2 hours fully charged, it works up to 8 hours for calling, 10 hours for playing music.