Car tire pump 12V portable with auto stop for oxygen cylinder1、Dual Power Sources: This electric high pressure air pump can be powered by a 12V car battery outdoors and a household power source indoors, making it versatile and suitable for various usage scenarios. 2、300bar High Pressure Inflation: Equipped with a high pressure quick fill system, this electric air pump offers fast and efficient inflation up to 300bar. The built in cooling mechanism prevents overheating, ensuring stable operation. 3、User Friendly Pressure Setting: Prior to inflation, the pressure setting can be easily adjusted, and once the desired pressure is reached, the pump automatically stops inflating, providing convenient and hassle free operation. 4、Double Filtration: With dual filters, this air pump effectively removes impurities from the compressed air, ensuring free from odor and clean air. It operates without the need for oil, relying solely on electric power for reliable and maintenance free performance. 5、Portable and Versatile: This electric high pressure air pump is designed to be portable and can be used for inflating car tires, oxygen cylinders, and various household applications. It seamlessly transitions between car and home use, making it convenient and easy to operate.