BUILT-IN POWER ADAPTER & SIMPLE CONNECTION: Power converter and compressor are integrated.this is a hpa pump that doesn't need a transformer for wall outlet use,safer to use.SMACO scuba tank compressor can be powered by the 12V car battery, also can be powered by the home 110V/220V AC.This will make this air pumb more usefull as you can use it anywhere SET-PRESSURE & AUTO-SHUTOFF: The filling of a pcp or paintball air gun is hassle-free. When the air pressure reaches the pressure value we set, the compressor will stop filling. So that you can free your hands, save time.Please release the pressure before starting the machine DOUBLE FILTRATION & OIL-FREE: SMACO paintball air compressor uses fan cooling, does not need oil, clean and hygienic, no need for an external water pump to cool. In addition, it is also equipped with an oil-water separator ,the 5μm fiber and active carbon combined filter element can effectively filter moisture and other contaminants in the air, output clean and dry high-pressure air WIRE SPOOL DESIGN& EASY TO CARRY: The scuba compressor adopts a spool design, so we don’t have to worry about the wire winding. At the same time, the integrated design of transformer and compressor and fan cooling design are very convenient for us to carry and for us to inflate outdoors WIDELY APPLICABLE: This Portable 4500 psi air compressor is mainly designed for PCP air rifles, paintball guns, and scuba tanks . Fill a 0.5L tank from 0psi to 3000psi is a swift 11 minutes; Fill a 1L tank from 0psi to 3000psi is a swift 26 minutes; Fill a 2L tank from 0psi to 3000psi is a swift 46 minutes.The duty cycle of the machine is 25 minutes run / 10 minutes cool. This allows for filling of larger tanks,as long as the compressor is allowed to cool Introducing the SMACO PCP Air Compressor, a versatile and high-performance solution for PCP air rifles, paintball guns, and scuba tanks. This 4500 Psi/30Mpa compressor is designed with convenience and efficiency in mind, featuring a built-in power adapter for simple connection to both 12V car batteries and 110V/220V AC outlets. The set-pressure and auto-shutoff function ensures hassle-free filling, stopping automatically when the desired pressure is reached. The oil-free, double filtration system, equipped with a 5μm fiber and active carbon combined filter element, guarantees clean and dry high-pressure air. The wire spool design and integrated transformer make for easy carrying and storage. With a wide range of applications and fast filling times, the SMACO PCP Air Compressor is a must-have tool for all your high-pressure air needs.