Function: LOW VOLTAGE: The interior of the mini air pump adopts safe low voltage to ensure user safety and no need to worry about current leakage and injury during operation. QUIET OPERATION: The noise generated during the operation of the mini air pump is very low and also provides a quiet working environment. STABLE PERFORMANCE: The mini air pump is equipped with a pressure switch and relief valve to keep the pump away from damage and to control the normal operation of the pump. CORROSION RESISTANCE: The mini air pump uses engineering plastics with good performance as the coating material, which has good corrosion resistance and durability. EASY TO REMOVE: The installation and disassembly of the mini air pump is very convenient and simple, which is convenient for users. Specification: Item Type: Micro Air Pump Material: Engineering plastics Air Nozzle Diameter: Approx. 5 mm / 0.2 inch Vacuum flow: 2.5-8.0 LPM Maximum vacuum: less than or equal to -60Kpa (-450mmHg) Maximum overpressure: greater than or equal to 100Kpa (750mmHg) Noise: less than or equal to 65db (at 30cm distance) Life test: greater than or equal to 500 hours (continuous) Package List: 1 x micro air pump