Talk handstofree: Connect the FM transmitter to the car using Bluetooth and make your driving even safer. Hold the button for two seconds to activate the Siri or Google Assistant voice assistant that can help you make and receive calls, play music and control navigation. It supports both iPhone and Android systems. Listen wirelessly in the car: Use the transmitter to listen to music in the car via Bluetooth. It uses noise reduction technology so that you can listen to a nice and clear sound. The stable connection also works well during phone calls. Every time the transmitter is switched off, it memorizes which FM frequency, which color and which song was last played and continues there when it starts up again. With QC3.0 fast charger: With two USB sockets for charging or USB memory. Plug your phone into the QC 3.0 socket for extra fast charging! Specifications: LED Colors: Red, Orange, Yellow, Green, Light Blue, Dark Blue, Purple (Press "M" to change) Supports: MP3, WMA, WAV, FLAC and APE, as well as SD memory cards and USB sticks. The device supports QC3.0, QC2.0, FCP, BC1.2 Colour: Black Voltage: 12Vto24V USB: 1 x 5V or 1A and 1 x 5V3A Package includes: 1 x FM transmitter 1 x AUX cable Wireless FM transmitter for the carFast charging with QC3.0Clear and clear stereo sound7 different LED colors