Blaupunkt RD4 — AUX и увеличение громкости — DRIVE2
Amazon.com: Acouto Car Bluetooth AUX in Cable ABS Metal Bluetooth 5.0 AUX in Cable with Mic Radio RD4 Wireless Auxiliary Input Adapter Replacement for C2 C3 C4 Car Audio Cable(with Power Adapter) :
Bluetooth Aux Adapter Mp3 For Citroen C1 C2 C3 C4 C5 Ds3 Ds4 Blaupunkt Rd4 Radio - Cables, Adapters & Sockets - AliExpress