Cooling Cushion  Air circulates through 176 holes ofthe cushion.  Acupressure nodes provide stimulating massage.  powerful fan draws in amdient air for ventilation comfort behind your back and thighs  Can be applied to all kinds of vehicles at 12v.  When car temperature around 25 degrees,this product can be used in lieu of air conditioning. SPECIFICATIONS  Consumption Voltage:12V  Power Consumption:500-750 mA