1. Auto Starter Portable Car Starter Car BAT Multiple Protection Measures Safety is our priority, which is why our jump starter is equipped with multiple protective features. The builtin performance chip supports functions such as shortcircuit, reverse connection, overcharge, overcurrent, and reverse polarity protection. If the positive and negative terminals are incorrectly connected, the device will sound an alarm to alert you and prevent accidents. With these comprehensive measures, you can confidently use the starter. 2. Builtin Battery and LED Light Our jump starter isn't just for starting your car. It also offers versatility with its capacity builtin battery. With longlasting power, it features USB output ports to charge your phones, tablets, or other compatible devices. Additionally, the included LED light functions as both a flashlight and an SOS signal, making it ideal for nighttime emergencies or outdoor activities. Whether you need to light your way or call for help, this device has you covered. 3. LowTemperature Starting Cold weather can be a real challenge for vehicle batteries, but our portable jump starter eliminates this concern. Thanks to its intelligent power management system, this device supports lowtemperature starts, allowing you to ignite your engine even on the coldest mornings. No more dreading winter—with this starter, the cold becomes child's play. 4. Auto Starter Portable Car Starter Car Battery Star. Builtin Air Compressor Inflate your tires and sports equipment with the integrated air compressor. Equipped with multiple nozzles, you can effortlessly inflate car, motorcycle, or bicycle tires, as well as balls, pool floats, and more. This multifunctionality means whether you're stranded with a flat tire on the road or preparing for a fun day at the beach, you're always ready.