3L Oxygen Concentrator

https://www.cantamedical.com/products/3l-oxygen-concentrator/

CANTA Medical Brand Oxygen Concentrator delivers oxygen with a concentration of ≥90% per minute. Small body with great power.Intimately equipped with a low oxygen purity alarm function, and Real-time display of oxygen concentration can be seen on the electronic screen. You can inhale oxygen with peace of mind.