Easy to clean.
* Do NOT use AA batteries and USB charging cable at the same time otherwise the devise will be damaged.8*10.1 inches (H) x 1. Portable Nebulizer Handheld Ultrasonic Inhaler Tiny Mist for Adult Kids Green · ã2 Way Power Supplyã Can be powered by 2 AA batteries or by USB cable charging but do not use the 2 ways at the same time.