Support calls/support recording (external recording). Recording needs to be operated in TF mode or USB mode.(Long the MODE button to start recording, long the MODE button again to cancel recording and play the recording file; in recording mode, you need to connect a storage device U disk or TF card;)Support USB/TF/Bluetooth/radio/AUX automatic switchingSupport power-off memory function: remember the songs and volume before power-offThe product comes with a power amplifier that supports balanced output and a stereo power of 50W.5V-12V power supplySupport folder selection playbackSupport MP3/WMA/WAV/APE/FLAC version of song decodingSignal-to-noise ratio ≥70dBRadio frequency range: 87.5~108MHzDue to different batches, there may be differences in product appearance and printed text, which not affect useButton function description:"PREV/VOL-" long to reduce the volume; in USB/TF/Bluetooth/radio mode, short to the previous song/previous station"PLAY/PAU" short to play/pause in USB/TF/Bluetooth mode; long to switch modes."NEXT/VOL+" long to increase the volume; in USB/TF/Bluetooth/radio mode, short to song/next radio station"MODE" is mode switching, a total of 5 modes (Bluetooth-TF-USB-FM-AUXColour:BlackMaterial:plasticPackage Contents:1 x Host3 x 2P power cord1 x 1P radio antenna1 x Remote controlOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.