Philips Oxygen Generator Device (Simply Go Mini) one of the best oxygen generating devices.. The device is almost new, used very little, and I checked it at the company I bought it from in Riyadh, and it doesn't need anything. I replaced its filters with new ones.. The device is suitable for respiratory patients who need light portable devices, as this device is the lightest portable device in the world according to my reading and research.. I bought the device for approximately 15,000 SAR and I don't need it currently. Please, as a special request, communication should be via WhatsApp messages only.