The Bluetooth transmitter makes the car radio Bluetooth-capable, allowing you to listen to music and co. from your smartphone or tablet on the car radio via Bluetooth. Make calls easily with the integrated hands-free system. 1-button function: answer/end calls or redial the last number. USB-A socket for charging currents with Qualcomm Quick Charge 3.0 technology up to 3 A. Optimised charging process protects the battery and thus extends the service life of your mobile, tablet, etc. Direct MP3 audio playback via integrated micro SD card or USB slot. Automatic overload and overheating protection as well as short-circuit protection protects the connected devices. The USB charger automatically recognises connected devices and charges them optimally. For universal wireless transmission of Bluetooth signal sources such as smartphones or tablets to any car radio. Signals are transmitted wirelessly to the tuned FM frequency (set manually on the transmitter) of the car radio, the device always remembers the last frequency used. Simple and cost-effective retrofit solution for older car radios without a Bluetooth connection: Music, audio book and podcast variety via Bluetooth from a mobile, USB stick or micro SD card. When a call comes in, the device automatically switches from music mode to hands-free mode. Power supply via cigarette lighter plug integrated in the car radio adapter. USB output: for charging mobile devices, practical e.g. for navigation devices used in parallel, so no slot is lost even with radio transmitter. Compact housing fits into the Cockpit to save space.