portable mini speaker False color screen: 28*28mm Full-format audio decoder Support U disk, SD card, Mini SD, TF card ... , USB Portable mini speakerFull-format audio decoderSupport U disk, SD card, Mini SD, TF card, ... qualitySupport Language English/Chinese 24 LanguagesBuilt-in RTC,Clock,alarm display,Calendar and Radio functionBuilt-in audio switch electronic switchPower:li-on ...