... . Electronic Volume Control 3. Mute / Clock Control car audio cassette with usbFeatures:1, Car radio 2, FM receiver 3, Electronic turning 4 ... , Support USB5. Clock function 6, Mute function 7, Voltage:12V/24V 8, LCD ... )FM/AM Stereo Receiver 30 Preset Memory Stations (18FM+12AM) car audio cassette with usb