... 3W*2 Frequency Response 200Hz ~ 18KHz Signal-to-Noise ≥85dB speaker unit 2 Battery Charging Voltage3.7~5V Power Supply Input ... engrossing,elegant2,support format: MP3, WMA, Double decoding3,support External music broadcast equipment(AUX IN)connection,enjoy pleasure without restriction4,have ... FM antenna to achieve in a hole7,Hi-fi outgoing speaker, music plays on anywhere, anytime, unlimited pleasure