Three-Stage Spray Design: Adjustable inhalation experience. This product features a three-stage spray mode designed to meet the needs of both adults and children. The weak mode is gentle for children and sensitive individuals, while the strong mode is ideal for effectively delivering medication. Comfortable for the whole family to use. Ultra-Fine Particle Design: Maximizes drug absorption efficiency. The mist particle size is only ＜3.0μm, extremely fine, reaching deep into the airways and lungs. Quiet Design: Peace of mind for nighttime use and children. The operating noise is kept below a quiet 50dB, allowing for use during sleep or in quiet environments. Special consideration has been given to ensure comfortable use, especially for young children and those sensitive to noise. Portable Convenience: Compact design for use anywhere. In addition to its lightweight and compact design (approximately 105.5g), it supports USB charging, making it easy to use on the go. It can be used at work, while traveling, at home, and anywhere else. 【Package Contents & Warranty】Package Contents: Nebulizer main unit x 1, Mask (Adult) x 1, Mask (Child) x 1, Mouthpiece x 1, USB cable x 1, Storage bag x 1, Instruction manual x 1.