Fast charging speed: The maximum pressure of this product is 4500PSI, which makes it only takes 15min for the pressure of a 0.5L diving bottle to rise from 0MPa to 30MPa; Built-in Power Adapter:Can be operated using an electrical outlet or vehicle battery with flexible AC/DC (110V/12V) operation. Adjustable pressure: The PCP compressor features a Adjustable pressure gauge and a temperature gauge. The compressor can easily achieve 4500Psi and automatically stop filling when the preset air pressure is reached. Built-in drain system: Inlet drain valve system,remove deposit auto-matically,below with drain valve screw to avoid and reduce maintenance; Portable design and light weight :( 22 pounds) makes it easy to transport to the range or field; Features a sturdy carry handle and rubber feet;, Weight: 26.45547144 Pounds, Manufacturer: Xiamen Subang Technology Co.,Ltd.