5 Spray Modes - The wireless dual nozzle humidifier has 5 working modes: continuous spray, alternate spray and intermittent spray for 1 or 2 nozzles, to meet your different needs Cordless/Wired - The built-in 2000mAh battery can keep cordless working for up to 10 hours and supports fast charging in 2 hours. Battery status indicator and also with USB function ready to use Timer and BPA-free materials - Optional 4 hour/8 hour auto shut-off to protect the wireless humidifier and for reasons of security. Made of BPA-free materials, ideal for babys room and kids Quiet design - Humidify the air at a low noise level of only 28dB, does not 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 for the whole day. day with up to 8 hours depending on the type of spray mode used