Reliable jump start and emergency tool The Car Jump Beginner provides a powerful starting supply, a user friendly auto tire inflator pump to inflate tires, and a preset tire pressure function, making it a versatile device for roadside emergencies. Immediate engine start Delivers up to 1000 A starting current for fast, effortless starts, capable of reviving vehicles with large displacement even when the battery is completely discharged, thanks to voltage free instant start technology. All weather performance Designed for rugged conditions, it operates efficiently from -10C to 85C, ensuring reliable performance across climates. Start with confidence When the car battery is empty, it can be used as starting power to ensure the tire pressure stays within the safe range; the auto air pump with preset tire pressure inflates tires easily and helps with quick car starts. Use scenarios - Jump start a car with a dead battery in cold weather to resume your drive. - Inflate tires to preset pressure on the road or after long drives for safe handling. - Provide emergency starting power and tire inflation during roadside breakdowns.