Automatic CPAP device with variable pressures, automatic on and off, without the need to press a button. Prisma SMART is a small and easy-to-carry device in Israel and abroad. It adapts itself to the user by the patient's samples, thus knowing the amount of air needed to overcome obstructive sleep apnea. Combines with its operation a humidifier (optional) that provides a particularly fresh and pleasant user experience. It boasts a completely silent operation, which provides comfort to the user and his family. Dimensions cm x 13.5 cm x 18cm 17