Durable and practical to use Functions via Bluetooth-enabled devices. No functional limitations of the car radio Allows you to connect an external audio source With the advancement of wireless technology, wireless connectivity is becoming increasingly popular Adopts Bluetooth 5.0 protocol, backward compatible with Bluetooth 2.0, 3.0, and 4.0 Supports common audio formats including MP3, WMA, WAV, and FLAC Enables high-quality audio decoding and stable data transfer between devices Ideal for music playback, hands-free calling, movie watching, and map navigation Installation: Plug into the CD player jack (please confirm the corresponding socket) Connect your mobile phone to the Bluetooth module, select aux audio source, then play music from your phone Compatible with the following models featuring Blaupunkt/VDO/Bosch RD4 radio systems: Citroen C2 2005+ Citroen C3 2005+ Citroen C4 2005+ Citroen C5 2004+ Citroen C6 2005+ Citroen C8 2004+ Citroen Berlingo 2005+ Citroen Synergie 2005+ Peugeot Expert 2007+ Peugeot 207 2006+ Peugeot 307 2005+ Peugeot 307SW 2005+ Peugeot 307CC 2004+ Peugeot 308 2007+ Peugeot 407 2005+ Peugeot 407SW 2005+ Peugeot 607 2005+ Peugeot 807 2005+ Peugeot 1007 2005+ Peugeot 4007 2007+