Custom Autosound radios have an auxiliary input, AM/FM tuner, pre-set channels, front/rear fader, digital clock and power antenna lead. However, if you’re looking for a full technology upgrade, the USA-630 offers an optional 6 disc CD changer and optional Bluetooth capabilities. The top of the line radio from Custom Autosound is the USA-740. The USA-740 features Bluetooth built into the radio, chrome push buttons, 5 channel pre-amp outputs with subwoofer control as well as the USB port and CD changer controller. All Custom Autosound radios are backed by a two year manufacturer warranty. Antique Automobile Radio classic stereos are 100% exact replicas of the original and come with Bluetooth built into them. These radios function near identically to the stock radio with original a die-cast nose piece, pushbuttons, knobs and a digital tuner. These models combine modern technology with classic car features all while having Bluetooth connectivity in an OE looking unit.