The 5V power supply of the car USB port can be converted into a 12V lighter socket power supply. With boost converter circuit, stable This model is an improved version, using larger shielding inductance and diodes, the wire is thickened with a copper core, and it is more stable to use When the car's lighter interface is not enough, this conversion can convert the USB 5V power supply to the 12V lighter female power output, which can be connected to some driving recorders, electronic , etc. Does not support high-current devices such as car vacuum cleaners and car air pumps Product length: 30cm Interface type: USB x 1, lighter female socket x 1 Input interface: USB Output interface: lighter socket Input voltage: 5V Input current: 2A-3A Output voltage: 12V Output current: 1A (max) colour:Black Material:PVC size:30 x 6.4 x 2.7cm Package Contents: 1 x Conversion cable Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.