1.CE,ROHS,ISO,FCC,CB 2.MP3/USB/TF reader play music . 3.FM radio 4.Remote control 5.Manufactory:OEM welcome MINI SPEAKER AMPLIFIER N952011 NEW ARRIVAL Description: Mini USB speaker with general function headset microphone. More function USB(SD/MMC/ TF) card reader and play music.Some model also with Remote control ,Bluetooth microphone , FM radio. Widely used at home, office , school ,tourism, ...