Feature:   1. BUILT IN POWER TRANSFORMER: The air pump can be powered by DC12V on board battery, which is convenient to carry when going out. In addition, you can also use the wall socket to power the pump in your home.     2. AUTO SHUTDOWN: The air pump will automatic shutdown when the preset pressure is reached, safe to use.     3. FAN COOLING REAL TIME TEMPERATURE DISPLAY: This air pump has a built in 12500rpm cooling fan, which starts to run when the air pump is powered on. Real time temperature display makes your air pumping safer and easier.     4. WIDE APPLICATION: The air pump is suitable for diving, outdoor, fire fighting, PCP inflation; Applicable to most DIY PCP air rifles, air pistols, paintball guns and HPA tanks.     5. FAST WORK: From 0 to 300 bar, the pump takes about 25 minutes to fill the 0.5L tank, and from 200 bar to 300 bar, it takes 10 minutes.             Specification:               Item Type: PCP Air Pump  Material: 304 Stainless Steel, Brass   Pump Type: High pressure air (HPA) pump (only for dry compressed air)  Maximum Inflation Pressure: 300BAR (4500psi/30MPa)  Maximum Inflation Capacity: 0.5L (500cc)  Inflation Rate (0.5L): 0 to 300BAR, about 25 minutes  Compression Limiter: User selects manual shutdown  Other Power Supply Modes: Can be powered by DC 12V on board battery  Cooling System: Fan air cooling  Filter System: Filter with replaceable drying medium and dust filter  Air Hose: Foster type 8mm quick connector is provided                        Package List:       1 x PCP Air Pump       1 x Transformer       1 x Air Hose        1 x DC12V Lead (Applicable to car battery)       1 x Manual        18 x Accessory