Device Features: Suitable for children and adults: Comes with two masks (one for children and one for adults). Completely silent: Works with advanced Mesh technology without any sound, making it ideal for children to use while sleeping without disturbing them. Practical and portable: Battery-operated and easy to carry in a bag or pocket while on the go and traveling. Works at any angle (360 degrees): Can be used even while the child is lying in bed. 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.