Medcare's Airpump (2) Type AP-300P is made from impact-resistant and anti-distortion ABS (#709) material with a dimension of L290mm*W152mm*H108mm. Its control button can be adjusted freely with two paths of air filter structure. It also has a noiseless feature when you put shake-resistant and noise eliminator fittings inside. Air pressure ranges from 45-105 (mmHg) with an air output of 5-6 (Liters/ Min). Air inflation occurs every 8 minutes.