Blue USB Micro SD/TF Stereo FM Radio Portable Speaker for MP3 MP4 Player FM Radio LCD Screen
Feature:Support TF Card:Plug and View.USB interface:be able to play music by connecting your MP3, MP4, CD, DVD, iPod, iPhone, GPS, PSP, mobile phone, notebook computer, etc.Power Supply:USB interface connect to computer or use  DC-5V power adapter for charging.(Built-in lithium battery)Buit-in FM Radio.Built-in 3W binaural audio frequency amplifier.Output:RMS 3W THD=10%Frequency response: 150-18000 Hz(3dB)SNR:80dBLoud speaker: 1.57 inches(External diameter:40mm) Magnetic resistant 4 ohmsBuilt-in aluminum vibration film.Headpone output:3.5mm.Basic Function:First,Music Mode1.Plug TF Card or USB Flash Disk,ONLY SUPPORT MP3 FORMAT2.Short Press |</V- / >|/V+: Last / Next musicSecond,Audio Device1.Plug Mini USB cable into LINE IN interface and connect other side of the 3.5mm cable into kinds of Audio Device,such as IPHONE/PC/IPOD/MP3/TABLET2.When LED show AUH, exchange songs by operating Audio Device.Third,FM MODE1.Plug Mini USB cable into LINE IN interface for a good sound2.Short press </V- / >|/V+: Last / Next Channel3.Short Press >||: Search Channel Automatically4.Press M button: Exit this modeThere is a roller on one side of the speaker for volume increase and decreasePackage Included:Mini Speaker * 1USB & Audio cable * 1User Manual *1For more information here:Black color, search B0080NHRD2 on Amazon;Red color, search B0080NHRSM on Amazon;Silver color, search B0080NHRY6 on Amazon;Green color, search B0080NHS0O on Amazon;Want a 8GB Micro SD card? Search B007IGAL80 on Amazon.