Product Features: Advantages: Silent, portable, fine particles, large fog, less residue, fast Effective & Smooth and Fine Mist - The handheld Inhaler combines the latest micro-mesh & ultrasonic technology atomizes large amount of mist Particles, size less that 5um, which would be absorbed quickly and easily Ultra Silent & Easy to Operation - Low-noise design is more silent through piezoelectric components.The little sprayer’s noise less than 25db, No more disturbed while working, One-button operation, easy to use, ideal for all ages. Travel &Two Power Supply Modes - Use Included USB cable or Insert 2 AA batteries (No Included), easy use at home and convenient to carry out while travel. Use Widely for Adult & Kids - The atomizer comes with different type accessories, one for adult, and one for kid. Easy to operate, suitable for all ages. Safe Use & Friendly Design - Made with high quality friendly materials and durable. The liquid bottle can be Detachable to facilitate cleaning and disinfection to avoiding cross infection Flashing light reminder-light on means normal work, flashing light means no battery or low voltage Automatic shutdown-When there is no medicine in the cup or the voltage is insufficient, it will automatically shut down.