Product features: It can convert the 5V power supply of the car USB port into a 12V cigarette lighter socket power supply. With boost conversion circuit, stable quality Product use: When the car's cigarette lighter interface is not enough, this conversion line can convert the USB 5V power supply to 12V cigarette lighter socket power output, which can be connected to some driving recorders, electronic dogs, etc. Do not support high-current devices such as car vacuum cleaners, car air pumps, etc. Interface type: USB*1 cigarette lighter socket*1 Input interface: USB Output interface: cigarette lighter socket Input voltage: 5V Input current: 2.1A, Output voltage: 12V Output current: 1A Product color: black Product size: 30cm*6.4cm*2.7cm Product material: PVC, conductor is copper wire. With boost circuit