For sale: Home oxygen concentrator from the American company DeVilbiss. Used for one week, in like-new condition with invoice and under warranty. Key Specifications: Device Capacity: 5 liters per minute (precisely adjustable flow). Manufacturing: Original American (designed for heavy-duty and continuous operation). Oxygen Purity: Provides very high medical-grade oxygen. Safety: Equipped with sensor technology (OSD) and audible and visual alarms to ensure user safety. Design: Practical and equipped with wheels for easy transport between rooms. The new device price is around 3000 SAR. Used for one week, in like-new condition with invoice and under warranty. Selling to the highest bidder, please contact via private messages. May God grant success.