Portable auto starter with built-in battery, LED light and air pump Protection and safety - Multiple protection features: short circuit protection, reverse polarity protection, overvoltage protection, overcurrent protection, and misconnection protection. - If the positive and negative clamps are connected incorrectly, the unit emits an audible alarm to help you avoid a breakdown. Power, charging and lighting - Built-in high-capacity battery powers jump-start capability and USB output ports for charging phones, tablets, and other devices. - Integrated LED light acts as a flashlight and SOS beacon for night emergencies or outdoor activities. Cold weather performance - Intelligent power management supports operation in low temperatures, helping you start your engine on cold mornings. Air inflation function - Built-in air pump with multiple nozzles to inflate car, motorcycle, and bicycle tires, as well as balls, pool floats and more. Use scenarios - Roadside jump start in cold weather: quickly start a dead battery and use USB ports to charge a phone while you wait. - Outdoor trips: keep a phone or tablet charged and use the flashlight or SOS mode when needed. - On the go inflation: air up tires or gear at the trailhead, campsite, or gas station with minimal tools.