Description: Mesh atomization and 3 gear adjustment: the portable nebuliser create fine mist particles for a better absorption. Almost quiet: The noise at work is less than 36dB, which is very quiet, will not cause you trouble when busying with other work. Automatic Shutdown: Automatic detection of anhydrous function, automatic shutdown without water, and intelligent shutdown in 20 minutes to prevent dry burning. Lightweight and Portable: it can be carried in a handbag and used at any time. Suitable for adults and kids.It is USB charging. Self-cleaning Inhaler: Hand-held and self-cleaning function, before or after each use, tap water is required. Press the switch button to activate the self-cleaning mode for a few minutes to avoid clogging. Size Chart: Size: approx. 11.6x6.7x4.2cm / 4.56x2.64x1.65 inch Package Includes: 1 Piece Nebuliser 1 Piece Big Face Mask 1 Piece Small Face Mask 2 Pieces Mouthpieces 1 Piece Dustproof Cover 1 Piece USB Cable Note: Please allow 1-3mm measuring deviation due to manual measurement. Due to the different monitor and light effect,the actual color of the item might be slightly different from the color showed on the pictures.Thank you!