AGPtEK Wireless Car Audio FM Transmitter Bluetooth Receiver Speaker Music Streaming Receiver Adapter with Hands Free Calling for Samsung iPhone BlackBerry HTC LG Sony Motorola iPod/iPod Touch Tablet Digital PLL, transmission is stable in different environments. Works with your Bluetooth-enabled Mobile Phones, Tablet PC, MP3/ MP4 players, and other devices with a 3.5mm headphone socket. Enhanced voice detection and noise cancelling microphone makes hands-free calling simple and easy! Powered by rechargeable built-in lithium battery, do not need to use the iPhone's power. Package included:1 x FM Transmitter, 1 x Micro USB Charging Cable, 1 x USB Car Charger.