1. Plug and play: Install through the port of the original CD changer, which is convenient and fast, and integrates with the car. 2. Hi-Fi sound quality: Connect to the car stereo through a wire harness, no interference, no loss of sound quality, comparable to the original CD sound. 3. Allows you to easily own the popular car audio configuration, which is a good choice for safe driving and enjoying digital music. 4. Voltage: 12V 5. For BMW: 2002-2006 E46: 320i, 320ci, 320cic, 323i, 323ci, 323cic, 325i, 325ci, 325cic, 328i, 328ci, 328cic, 330i, 330ci, 330cic & M3 (Coupe, Sedan & 9-9 Convertible) 20 2002-2003 E39: 525i, 525iT, 530i, 530iT, 540i, 540iT & M5 (Sedan) 09/2002- 2002-2006 E53: X5 3.0, 4.4, 4.6, 4.8 and X5 M 10/2002-
