Dual stage pump: 1. Extra fast pumping at low pressure; 2. Normal speed to reach high pressure. Automatic stop when selected pressure is reached. Inflates a 10’7 iSUP board in 4 min 30 s to 10 PSI, in 8 min 30 s to 16 PSI 1,70 m quality hose and 3 m power cord. Power input: 12V. Works on the cigarette plug of your car.