300ml water tank, 50ml/h spray volume, 2 working modes: Intermittent Mist (3 seconds on/3 seconds off) & Continuous Mist. Working Time: 8 hours in continuous mode, 10 hours in intermittent mode. Humidifier automatically shut-off when the water level is low or 4 hours automatic power-off protection. New ultrasonic technology supports an extremely quiet working noise <30 dB. Great night light, Colors include: green, dark blue, red, yellow, pink, light blue, white. Powered by Micro USB 5V=1A, compatible with any device with USB port (laptop, desktop, power bank, socket, power outlet). Non-toxic material, CE Certification, RoHS qualified. Notice: Mini humidifier suitable for small rooms and small space. The mini humidifier works better in a room under 10 square and space. Please avoid using low-quality essential oils. If use the low-quality essential oils, it may cause the filter stick or the cover stuck. The filter stick need to be cleaned after each use.