RetroRadio LC-M4-308-309-39-78BM2 — Compatible with 1977-83 BMW 3 Series | HD, Bluetooth 5.0, SiriusXM-Ready

RetroRadio LC-M4-308-309-39-78BM2 updates classic dash fitment for 1977-83 BMW 3 Series cars while adding modern connectivity. Assembly required, featuring modular mounting to simplify installation. The radio offers AM/FM Tuner with 30 Presets and HD reception, plus built-in Bluetooth (Version 5.0) for wireless audio and hands-free use. Includes 2 USB ports and a dedicated subwoofer output for expanded hookup options. Unit is SiriusXM-Ready® (SXV300V1 tuner sold separately) and houses a Built-in 300-watt (peak power) Mosfet amplifier.