Portable 12V High Pressure Air Compressor 30mpa Built-in Transformer 4500psi ! Feature:1. The product uses fan cooling for rapid heat dissipation, which effectively protects the machine and prolongs the life of the machine2. LCD display design, you can observe the machine parameters at any time3.350W high power, fast inflation speed and high efficiency, effectively saving your time4. Small size, easy to carry, wide application range Parameter：Name: High Pressure Air CompressorColor: OrangeWorking pressure: 4500PSI/30Mpa/300BarCooling system: Fan coolingCharging rate: 18min/0.45L tankMotor power rating: 350WVoltage: 220V-110V-12VProduct size: 30×25×25 (CM)/11.81x9.84x9.84 (IN)Product weight: 5.2Kg/11.46LbPackage dimensions: 30*26*25cm/11.81*10.24*9.84inPackage weight: 6.9kg/15.21lb Packing List：1*High pressure air compressor1*Transformer1*Accessories1*User manual Note:1. The vehicle-mounted inflating pump must connect the positive pole to the red line and the negative pole to the black line2. Confirm whether the fan operates normally after the machine is started, and whether there are any abnormalities in the sound of the machine (such as friction sound, uneven operation sound and air leakage sound)3. Confirm whether there are loose fasteners in various parts before use.4. Tighten the pressure release valve and observe the running speed of the pressure gauge indicator needle.