In addition to standard audio CDs, many CD players with remotes support Bluetooth streaming and digital inputs such as USB and SD card playback, a 3.5 mm AUX input, and AM/FM radio on models that include tuners.
Common wireless connectivity is Bluetooth for streaming. Wired options often include USB and SD inputs, a 3.5 mm AUX jack, RCA line outputs, and on some models digital optical or coaxial outputs. Some vehicle systems also support wireless headphones or an FM transmitter.
Many include AM/FM tuners with digital tuning and station presets. Portable models often feature a telescopic FM antenna to improve reception.