20psi Electric High Speed Pump for Inflatable SUP airSUP 12V with Auto Cut Off 2 Stage Powered From Car Cigarette Lighter Socket 12V ELECTRIC PUMP WITH ADAPTER fitting for H3 valve , most inflatable SUP are using this type Valve AUTO STOP, AUTOMATIC CUT OUT when the pressure reached your dialed in choice up to 20 psi (check your product manual for recommended pressure) FAST 2 STAGE PUMP: high speed , high volume fan mode + high pressure piston mode (average about 150L/min : you can fill an average size 10' SUP in about 8 - 10mins) POWERED FROM CAR CIGARETTE LIGHTER SOCKET, no messy cables to connect under car bonnet REVERSE MODE : EASILY SUCK OUT more air and roll up your SUP much easier and more compactly than before