Whealth Spiritus Oxygen Concentrator with 5L Capacity for Home Use Low Maintenance Spectacular Oxygen Purity Spiritus -5 Oxygen Concentrator delivers up 5LM oxygen and it is designed to deliver clinically superior treatment and more freedom, freedom from worry, freedom from deliveries, freedom from complicated maintenance. Features: Lightweight and easy to transport at 15kg Compact, ergonomic design takes up less space, looks less like a medical device One of the quietest mainstream concentrators No homecare provider filter change for two years Uses less power and produces less heat, so it’s more patient-friendly No filters for the patient to change Available with oxygen purity indicator.