1. The air pump has a built-in 2000mAh rechargeable lithium-ion battery, which can continuously inflate your car tires at a speed of 25 L/Min. (Only the wireless model has built-in lithium battery) 2. A portable air compressor can save you time and money and also make it easy to inflate your tires. 3. After connecting the inflation tube to the tire valve, you can read real-time tire pressure on the digital screen. When the tire pressure reaches the preset pressure value, the micro air compressor will automatically shut down, so there is no need to worry about over-inflation or low tire pressure. 4. Equipped with emergency LED light with brightness up to 80 lumens. Provides convenience and necessity for emergency lighting at night. 5. Equipped with 3 nozzles, perfect for inflating cars, motorcycles, bicycle tires, balls and other inflatable products. 6. Power: 120W 7. Voltage: 7.4V/DC 12V 8. Dimensions: 132 x 53 x 203mm (excluding trachea)