JKUOO Car Battery Jump Starter 4 in 1 1- Car Jump Starter 2- Air Compressor 3- Phone Charger Power Bank 4- Flashlight The air compressor inflates: Car tires / Bicycle tires / Motorcycle tires / Balls / Balloons and more... Specifications: 12 Volt / 5000 Ampere / 20000 mAh The device protects against: 1- Overcharge 2- Undercharge 3- Reverse Polarity 4- Short Circuit 5- Overheating 6- Overvoltage 7- Overcurrent 8- Anti-interference