Feature: 1.Elegant carry case design, with clear LCD display, LED security light. 2.Support MP3/WMA/WAV/APE file playback from USB/SD Card (Maximum support 32GB). 3.Support FM Radio, automatic frequency adjustment. 4.Support hands-free calls, answer or hand up the phone after connect the radio via bluetooth. 5.bluetooth function, play music from your phones via bluetooth. 6.Volume Control/ Real Time Clock Function/ FM Radio/ Electronic Preset Equalizer Control. 7.Auto memory preset store. 8.Remote Control. 9.Mounting Accessories included. Specification: Panel Size: 188 x 150 x 58mm (Wide*Deep*Height). Installation Dimension: 178 x 150 x 50mm (Wide*Deep*Height). Quantity: 1 piece. Power Supply: 24V. Max. Power Output: 60W×4. FM Frequency Range: 87.5-108.0MHZ. Back Light: Blue English Manual: Yes. bluetooth Connecting Method: Turn on your phone bluetooth function, search on and connect the CAR/btmp3 item, enter password 0000 (if needed), press MODE button to the bluetooth function, then the MP3 Player is now available for use. Wiring Guide: Testing Methods: 1.Twist the RED and YELLOW wire together and connect to the anode. The BLACK wire connect to the cathode. 2.Connect one piece of the wires to the horn, do not touch the wires each other. Installing Methods: please DO NOT electrify the machine before you connect the wires, otherwise it will damage the machine. 1.The YELLOW wire connect to the anode of accumulator, while the BLACK cathode. 2.The RED wire connect to the car key ignition. 3.If your cars have any subwoofers or exterior antennas, you also need to connect the BLUE wire. 4.Otherwise wrap the BLUE wire with adhesive plaster for other car models. 5.Horn has positive and negative electrode, connect them according to the methods. Pakcage Included: 1 X bluetooth MP3 Player; 1 X Remote Control; 1 X Cable; 1 X English Manual; 1 X Packing Box