Powered by DC 48V power supply convenient to carry and use; Suitable for car motorcycle electrocar tricycle bicycle ball air bed kayak small inflatable toys; Maximum air flow: 12L/Min; Inflation maximum air pressure up to 150PSI; Inflate for your car conveniently; With air pressure dial accurately measure the air pressure of the tire; High quality ABS material durable; Using method: plug the inflating valve screw into the tire valve; Connect the power plug to car battery charging port; Turn on the power switch it begains inflating; The meter needle will increase according with the tire pressure (normal tire pressure of electrocar is 40~60PSI); Turn off the switch and unplug and the valve; With accessories for ball and ai bed; Inflating time: 1 minute will reach normal air pressure the continuous inflating time not over 3 minutes in principle