The advanced air compressing system, shock mitigation system and multilevel muffler helps to make noise low 4 rubber feet design also helps stop vibration Environmental product， energy saving and long life service Specification: Voltage: 220-240V Frequency: 50Hz Power: 3W Output: 3.5L/min Pressure: 0.02Mpa Wire length: approx 65cm Size: approx 10.5x6.6x4cm (L*W*H)Pumps (Water)