HAVIT in-Car FM Transmitter, Wireless Bluetooth 4.0 Radio Adapter Car Kit, with USB Charging and Hands-Free Calling for iPhone, Android Cell Phone and More The Very Latest Bluetooth 4.0 Technology - to maximize device compatibility and pairing speed. Up to 30 feet range. Dual USB Charging Port - Provide your a 5V/2.1A fast charge port and a 5V/1A charge port. Feed your mobile phone or any USB charging device on your way. A Built-in Microphone makes hands-free calls easy while driving - plug-in, sync your phone, and enjoy your safety driving.The flexible neck ensure an ideal fit in nearly any vehicle. Broad Compatibility - connect wirelessly to iPad, iPhone, HTC, Galaxy, Blackberry, Samsung, LG & MP3 Players, Digital Cameras, Mobile Phones and nearly all Bluetooth device. Worry-free 12-month Warranty, Havit FM car transmitter, welcome guide, and our friendly customer service.