... .Multifunctional protection,more safety 3.high quality mini car power supply .car power inverter Purpose:for play MP3,Play MP4,Charge up cellphone ... :110V or 220V -output frequency:50HZ or 60HZ -Delivered power :75w the inverter can convert 12V DC of automobile to 220V/50HZ ... AC,and its output rated power is 75W product features:*streamlimed ...