Etonm motor entered air pump(dc pump, mini dc pump, dc air pump) industry for 6 years, however, designed and developed 6 series of dc air pump, there are et-ap12, et-ap13, et-ap27, et-ap33, et-ap36, et-ap60. Every series has several types. Type: et-ap12 Voltage: 3v-6v Flow: 0.8l/min-1.2l/min Pressure: 300mmhg-560mmhg Noise: 60db max Design: drived by dc brushed motor Materials: plastic and rubber (may have mixture) Application: blood pressure monitor (bp monitor pump), massager (face, eyes, head, and waist massage), medical-care equipment and appliance.... We can customize the pump, if you have any question about the pump, please feel free to contact us, your inquiry will be welcomed. Carton and plastic pack