electric. Its new never used Our BIPAP---Bi-Level Positive Airway Pressure, a non-invasive form of therapy for patients suffering from sleep apnea. The BIPAP is used to maintain a consistent breathing pattern at night or during symptom flare-ups in people with COPD. Effective, good quality BIPAP machine at a good price too. Makes a great travel size bipap machine. Comes complete with all the accessories you need. Easy to adjust settings and maintain
