In the name of God, the Most Gracious, the Most Merciful. I have a portable German Philips oxygen concentrator for breathing, with all its accessories, and it works efficiently. The portable oxygen concentrator (SimplyGo) is specifically designed to provide you with a continuous and pure flow of oxygen wherever you are, whether at home or while traveling and on trips. Device Features: Lightweight and Easy to Carry: Modern, elegant, and compact design that makes it easy for you to move it without any hassle. Absolute Freedom of Movement: Comes with a comfortable, dedicated shoulder carrying bag, as well as a durable, foldable trolley for smooth mobility and comfortable walking sessions. Endless Power (Home and Car Charging): Equipped with a powerful battery, a home charger (AC), and a car charger (DC) to ensure your device remains efficient even while driving and traveling long distances. Ease of Use: A clear digital screen allows you to control oxygen flow levels and monitor battery status with the touch of a button. Additional Accessory Bag: For organizing wires, chargers, and attached manuals and keeping them easily. Oxygen purity is over 90% as stated on the device. During device testing, it shows between 92% to 94% (the longer it runs, the higher the concentrated oxygen percentage). 📦 Contents (as shown in the picture): Smart portable oxygen concentrator. Elegant, padded shoulder bag for protection. Dedicated accessory bag for chargers. Comfortable pull-along trolley for outdoor mobility. Rechargeable battery. Home power cable and adapter. Dedicated car charger. Comprehensive user manual. The device generally provides from 0.5 liters of oxygen up to 6 liters depending on the following modes: Pulse Mode: From 0.5 liters to 0.6 liters. The device senses the beginning of the user's inhalation and delivers a specific burst of oxygen at that exact moment, which helps conserve battery power and increase its operating time during movement. Continuous Flow Mode: From 0.5 to 2 liters. The device delivers oxygen continuously and steadily without relying on the user's breathing (available in the standard SimplyGo device). Sleep Mode: From 0.5 to 6 liters. Highly sensitive to detecting the user's breaths during sleep, which are usually weaker and slower, and delivers a longer oxygen dose to ensure complete comfort (and if the device does not sense any breathing, it automatically switches to continuous flow to ensure patient safety). There is an alarm in case of breathing problems. The price of a new device at the pharmacy is 22,000 Riyals. There is a video demonstrating the device's operation on electricity, battery, and in the car. And peace and blessings be upon our Prophet Muhammad ﷺ.