Feature: 1. Emergency Jump Starter: The portable car battery booster is designed for 12V vehicles, providing a reliable 600A start current for quick ignition. 2. Multi Function Design: Compact and portable, this portable car jump starter also serves as an air compressor for inflating tires with a maximum pressure of 150PSI. 3. Safety First: Equipped with a built in LED display and emergency rescue function, this car starter ensures your driving safety in all situations. 4. Long Lasting Durability: Featuring lithium batteries with a total capacity of 2500mAh x4, this jump starter remains reliable for extensive use. 5. Safety Ensured: With multiple safety measures and a V0 flame retardant rating, this car jump starter is suitable for various car models and environments. Specification: .Item Type: Car Battery Jump Starter Size: Approx. 18x11x6cm / 7.09x4.33x2.36in Battery Type: 2500mAh lithium Battery x 4 USB Output: 12V/1.5A Starting Current: 600A Peak Current: 2000A Fire Retardant Level: V0 Maximum Pressure: 150PSI Operating Temperature Range: -30℃~65℃ How to Use: 1. The car starting steps should not be reversed, and the positive and negative poles should not be reversed. 2. The metal wires on the positive and negative terminals of the battery clamp metal head box battery should be in full contact. Dust or rust should be cleaned up first, 3. Confirm that the power supply is sufficient, the ignition start moment not more than 2 seconds. 4. If the battery is serious loss point or no power, please detach the battery start. That is to remove the negative battery cable, red and black clamps are connected to the positive and negative cable start. 5. If one start is unsuccessful, please start again after an interval of more than 30 seconds. 6. If you use the smart clip, the smart clip is correctly connected to the car battery cable, to be changed to green light state, before starting the car. If it keeps flashing or red light state, it means the operation is wrong. Package List: 1 x Car Battery Jump Starter1 x USB Cable1 x Charging Clamp3 x Inflating Nozzle 1 x User Manual