Portable oxygen concentrators are medical devices designed to provide supplemental oxygen to individuals with respiratory conditions while allowing them mobility and independence. These compact and lightweight units extract oxygen from the surrounding air and deliver it to the user, making them ideal for patients with chronic obstructive pulmonary disease (COPD), emphysema, or other respiratory issues who need oxygen therapy on the go. Portable oxygen concentrators are equipped with rechargeable batteries and often come with carrying cases or straps for ease of transport, supporting active lifestyles and enhancing quality of life.