1.Audio bass amplifier,saving energy; 2.With storable 3.5mm jack cable; 3.Ideal for gifts and promotional items; 4.OEM Product   DSCAmplifier Model:XB-F3L    CMinimum   Order    Quantity:60pcs/ctn   Battery:Lithium Battery/1pcs ,3.7V800mA    Charging Time:3Hr-5Hr    Power Supply:DC5VOutput power :3W*2(RMS)    Output Impedance:4OHM    Play Format for USB:MP1,MP2,MP3    Radio Frequency Range:88MHZ-108MHZRead Data Support Bitrate:32kbps-320kbps   Frequency Response:150hz-20k

Portable Mini Amplifier