... USB,TF,MPS input 3,several colors to selection:pink,black,red,white,etc. Specifications: Output Power: 20W Frequency Response: ... Battery Type: Lithium Battery Size:95x80x35 mmColor: pink ,red,black,white Features:The Rechargeable Voice Amplifier adopts ABS engineering plastic ... MP3 player With USB,SD/MMC MP3 input With echo function Audio Amplifier Technology:Audio amplifiers feed electric power to ...