【2X FASTER INFLATION & ACCURATE PRESSURE GAGE】Our powerful air compressor provides maximum pressure of 150 PSI and airflow of 38L/Min! Only takes less than 5 minutes to fully inflate a 95/65/R15 car tire from 0 psi to 35 psi or 60s to refill car tire in daily situation (28-35PSI). The tire inflator features an upgraded high-precision chip and large LED displays that show real-time and preset pressure values, accuracy within ±0.5 psi, ensuring the correct tire pressure and enhancing safety. 【DUAL POWER SUPPLY MODES & PARAMETER MEMORY】The portable air compressor is equipped with a dual power supply, so you can switch between cordless and electric inflation at any time. You don't need to worry if the battery runs out on the road because the portable air compressor comes with a 10.5ft 12V DC power cord for Road Rescue emergencies. Say goodbye to quick battery drain, insufficient power, and frequent charging. UNIQUE PARAMETER MEMORY FUNCTION can memorize the most recently used preset inflation mode to avoid repeated operations. 【4 INFLATION MODES & AUTO-OFF FUNCTION】The auto air pump for car tires with 4 units (PSI, KPA, BAR, KG/CM²) and 4 preset inflation modes (car, motorbike, bicycle, ball) can meet the inflation needs of most products, making it a must-have for traveling and home life. Use the “+” and “-” control buttons on the inflator to preset the desired pressure, connect the air hose to the tire, and press the power button. Once the preset pressure is reached, the electric air pump automatically stops inflating the tire, eliminating the need to worry about over-inflation, safe to use.