There are two main oxygen delivery modes:
Pulse flow devices delivers oxygen in short bursts when you inhale. This helps maximise oxygen delivery while conserving battery life and is commonly used in smaller, lightweight portable oxygen concentrators.
Continuous flow devices delivers a steady stream of oxygen regardless of your breathing pattern. These devices are larger and heavier than portable oxygen concentrators and are typically used in home or stationary settings.
Some models, like the Kingon P2-TOC (Transportable Oxygen Concentrator), offer a hybrid solution, combining higher output capability with portability for users who need flexibility across home and transport use.