Drive Devilbiss igo2 Portable O2 concentrator with extra battery

Settings 1-5 Pulse Dose • SmartDose Auto-Adjusting Conserver Technology included • Rugged design, including protective overmold • Weighs less than 5 lbs • Most sensitive conserver trigger on the POC market • 8.4" (H) x 3.5"(W) x 8.6"(L). Battery Duration 3.5 hours @ setting 2. Oxygen Purity 90% +4/-3 over entire operating range