Listening to Your Favorite Song and Charging your Device at the Same Time with This Innovative iKross FM Transmitter.The built-in microphone lets you talk hands free. Hang up, and your music picks up where it left off. Convenient 3 In 1 Features: FM Transmitter, Hands-Free Calling, and Single USB Port Charger. Full frequency range design effectively avoids interruption. Wide Frequency Range 88.1MHz-107.9MHz Hands-Free Calling Capability from the Car"s Radio System via 3.5mm Cable Crystal Clear LED Display FM Channels USB Output: 5V 2.1A Package Content: FM Transmitter with car charger, 1x User"s Manual Compatibility iPhone, iPod, iPad, Smartphone, Cellphone, MP3 Players, Tablets and other devices with 3.5mm audio jack Note : It Doesnt Come with any USB Data Cable, Please use your own USB Data cable to charge your devices