VT-1 oxygen concentrator features a user-friendly interface and is easy to operate for all ages. The large touch buttons and a 15° tilted screen angle aim for better visibility when you use it in your car. You can personalize your oxygen therapy duration with the auto-shutdown timer, which offers nine options from 0 to 240 minutes. The machine also operates quietly with low noise levels, reaching a maximum of 58 dB, which will not disturb or distract you during driving or taking a rest in the car. Moreover, to address the poor road air quality problem faced by many drivers.