- Support outside signal switch directly- Built-in RTC circuit<br />- Support USB/AUX/FM Switch automatically<br />- With MP3 decode chipset inside<br />- Support USB、 SD、 MMC card playing<br />- Support USB/SD card switch、 prev、 next、 volume control、 play/pause、 stop、 repeat etc.<br />- Support FAT16 & FAT32 file system<br />- Support MP1 layer3、 MP2 Layer3、 MP3 Layer3 version<br />- Supports 32~320KBps rates mp3 files- Wokring voltage: 3.7V<br />- Comes with Remote controller (1 x CR2025 battery、 included) + Chinese user manual<br /><br />                                                                                                                                Dimensions: 2.95 in x 1.97 in x 2.09 in (7.5 cm x 5.0 cm x 5.3 cm)<br />Weight: 1.94 oz (55 g)<br /><br />