1. The maximum pressure: 3.5 kg the average car pressure is in the range of about 2.3-3 kg. 2. Scope of application: Automotive/ Electric vehicle/ Motorcycle/ Rubber boat. 3. Additional features: inflation,test tire pressure , lighting, warning. 4. Operation method: Start the car, plug in the cigarete lighter, connect the air pipe, and open the switch to work. Cylinder specification: 24-cylinder movement, reinforced copper motor. Specification: Item Name: Vehicle-mounted Electric Inflator. Material: ABS. Current: 7A. Voltage: 12V. Power: 84W. Air volume: 35 (L/min). Function: inflation, tire pressure, lighting, warning. Power cord length: 3.5M. Inflatable tube length: 65cm. Size: 20*11.5*17.5cm. Color: Gold/Red/Silver. Accessories: 65cm trachea,metal gas needle 3 sets 3 sets. Note: 1. Due to lighting effects, monitors brightness , contrast settings etc, there could be some slight differences in the color tone of the pictures and the actual item. 2. Please allow 1-2cm differs due to manual measurement, thanks. Package Included: 1xElectric Inflator. 1xCigarete Lighter Power Cord. 3xGas Needles. 1xInflatable Tube