Device Features: Suitable for children and adults: Comes with two masks (masks) for children and adults. Completely silent: Works with advanced Mesh technology without any sound, making it ideal for children to use while sleeping without disturbing them. Works at any angle (360 degrees): Can be used only once and the masks are new with all accessories and the box. I bought it from a pharmacy for 999 SAR. Final price: 300 SAR.