Introduction of mini speakers

Mini speaker is a kind of professional portable music equipment with novel design, which does not need to consume the power of mobile phone and has its own rechargeable lithium battery. The built-in rechargeable lithium battery can work for 2 to 5 hours, and the charging time is only 2 to 3 hours. With FM radio, which song can be displayed when you plug in a USB flash drive or SD card, and directly play MP3 audio files of SD/MMC card and USB flash drive. Don't switch, remember to read automatically. It is called "angel of music" by many institutions.