RetroRadio LCB-M4-308-509-39-78CT2 — Compatible with 1971-75 Citroen SM | AM/FM HD, Bluetooth 5.0, SiriusXM-Ready

This RetroRadio unit (LCB-M4-308-509-39-78CT2) is designed to fit 1971–75 Citroen SM models and combines classic compatibility with modern audio features. Assembly required with modular mounting for straightforward installation. Audio and connectivity highlights include an AM/FM tuner with 30 presets and HD capability, built-in Bluetooth (Version 5.0), 2 USB ports, and a dedicated subwoofer output. The head unit is SiriusXM-Ready® (SXV300V1 tuner sold separately) and houses a built-in 300-watt (peak power) Mosfet amplifier for powerful playback.