5 Spray Modes - The wireless dual nozzle humidifier has 5 working modes: continuous flow spray, alternate spray and intermittent spray for 1 or 2 nozzles, to meet your different needs < p>Cordless/Wired - The built-in 2000mAh battery can keep cordless working for up to 10 hours and provides fast charging in 2 hours. Battery status indicator and also with USB plug-and-play function Timer and BPA-free materials - Optional 4 hour/8 hour auto shut-off to protect the cordless humidifier and to security reasons. Made of BPA-free materials, ideal for nursery and kids Quiet design - Humidify the air at a low noise level of only 28dB, won't disturb if someone is sleeping, studying or work. Great for Home, Bedroom, Plants, Office, Yoga, Travel Large Capacity and Mist - 800ml large capacity water tank ensures continuous use all day long with up to 8 hours depending on the type of spray mode used