1.material:metal 2.size:50 x 188mm 3.music form:MP3,WMA,WMV,ASF 4.With FM function 1.material ; metal 2.power output; 2×3W 3..size; 50 x 188mm4.Frequency range; 75HZ-20KHz 5.With FM function6..S/N; ≥90db7..speaker; 4∩ 3W8.Charge voltage; DC 5V9..With 3.5mm audio jack10.music form; MP3,WMA,WMV,ASF11.colour; golden pink blue purple golden red