dark blue& light blue for choose, supply 5 dental units. CE, IS09001& ISO 13485., durable & competitive. Voltage: 220V Power: 550W× 3 Frequency: 50Hz Traffic: 300L/ min Noise: 55-60Db Speed: 1400r/ min Volume: 135L Maximum pressure: 0.8Mpa Start-up pressure: 0.5Mpa NW: 80Kg