About this item ▶[DUAL POWER SUPPLY]: Are you bothered by the inconvenience of a 12V DC wired air compressor or worried about the battery running out quickly? Our tire inflator provide two power options, integrating 4500mAh Li-ion battery and 12V DC powered in an innovative way, which can be easily inflated anytime anywhere, a good helper in case of emergency. ▶[FAST INFLATION WITHIN 1 MIN]: OFY portable tire inflator can provide a maximum pressure of 150 PSI and 35L/min of airflow, which can completely inflate the 195/55/R15 car tire (0-36PSI) within 5mins or refill the car tire (25-36PSI) within 1min, keep your tires in good condition at all times. So you don't need to struggle to go to the gas station to inflate your tires anymore, it can save you money! ▶[TIRE PRESSURE DETECTION & AUTO OFF FUNCTION]: This air pump for car tires can measure tire pressure when inserted into the tire, it will auto shut-off when the preset pressure value is reached. No need to worry about over inflating. It has a large LCD digital touch screen with 4 pressure measurement units-PSI, KPA, BAR, KG/CM to choose from. CAR and SUV mode can be preset with one-button according to the vehicle model. But not for trucks! ▶[4500 MAH BATTERY CORDLESS INFLATION]: The dual power options tire inflator is built-in upgraded 4500mAh lithium battery, longer lasting and more durable. can inflate the 195/55/R15 car tire from 0-35 PSI about 4 times after a full charge or inflate from 28-35 PSI about 12 times. NOTE: When you get the product, please fully charge it first before using it. During charging, the green light will flash. When the three green lights come on and stop flashing, it means fully charged. ▶[4 COLORFUL APERTURE DESIGN]: This large LCD display touch screen has a circle of light around the edge, the aperture will display different colors with different pressure ranges during inflation and pressure measurement, always remind the tire pressure status. Besides, you can clearly see the tire pressure value of the monitor by this HD display even in the sunlight.