About this item Mini humidifier: Small design, convenient to take with you anywhere. Ideal for car, travel, bedroom, office, effectively moisturize dry skin and help you reduce skin peeling, nose bleeding. USB Only: Without battery. The USB is compatible with the USB port of any device,safe and easy to use. Two Spray Modes and automatic shutdown: Continuous spray & intermittent spray. Click the spray button for the first time to activate continuous spray mode. Click the spray button a second time, switch to the intermittent spray mode, click the spray button for the third time, turn off the spray. In continuous mode, it will automatically turn off after 4 hours. In intermittent mode, it will automatically turn off after 6 hours. It will shut down when the water level is low. Vivid and colorful circulating lights and luminous: This cool mist humidifier has a vivid and colorful setting of circulating lights to create a tranquil atmosphere while providing soothing fog. It provides you with maximum relaxation. Night lights can improve your sleep quality. KIND REMINDER: ①Do not use essential oils, perfume, distilled water, which will cause the cotton swab to clog and the Humidifier to be unusable. ②Please make sure the cotton core has soaked a few minutes before you turning it on. ③Any quality problem, please do feel free to email us.