Please find mini speaker attached, , for a exact specifications, this is details as below.1) Play movie , music from SD,U-disk.2) Apply to PC, mobile phone,MP3, MP4 and other audio source3) Built-in rechargeable Li-ion battery, 3 hours music playback 4) Output power:2Wx25) Speaker unit:32mmx2 6) Power voltage: DC 5V7) Frequence response:120Hz-20Khz8) SNR:≥60dB9) Power supply :USB port, Li-ion battery or DC 5V10) Product size:120*23*50MMQTY: 3000 pcs, Packing: blisterEXW PRICE, Delivery time, Looking forward to hearing from you soon.Best Regards,Jenny Show More