The Longfian JAY-1 is a compact, portable oxygen concentrator designed primarily for home healthcare, travel, and mobile use. It uses Pressure Swing Adsorption (PSA) technology to physically separate medical-grade oxygen from the air. Key Performance Specifications Oxygen Flow: Adjustable settings from 1 to 5 L/min. Oxygen Concentration: Varies by flow rate, typically ranging from 30% to 90% (±3%).