5 Spray Modes - 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 Wireless / Wired - Built-in 2000mAh battery can keep working wirelessly for up to 10 hours and enables 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 automatic shutdown to protect the humidifier wirelessly and for reasons of security. Made of BPA free material, great for nursery and kids' room Quiet design - Humidify the air at a low sound level of only 28dB, don't mind if someone is sleeping, studying or work. Great for Home, Bedroom, Plants, Office, Yoga, Travel Large Capacity and Mist - The 800ml large capacity water tank ensures continuous use throughout day with up to 8 hours depending on the type of spray mode used