... amplifier,with USB,TF,MPS input 3,several colors to selection:pink,black,red,white,etc. Specifications: Output Power: 20W ... Type: Lithium Battery Size:95x80x35 mmColor: pink ,red,black,white Features:The Rechargeable Voice Amplifier adopts ABS engineering plastic ... function Audio Amplifier Technology:Audio amplifiers feed electric power to speakers to reproduce music or other sounds at a wide ...