【One Button Control & Battery Powered】One button control for all functions, easy to adjust the mist and color changing night light. Short press for 2 mist modes and long press for night light. Powered by USB or battery. It can be charged by computer, laptop, power bank, car charger, etc. Built-in rechargeable Li-ion battery is 1200mAh, 3 hours for a full charge. 【2 Mist Modes & 7 Colors Night Light】This 300ml mini humidifier has 2 mist modes: continuous spray for 4 hours and intermittent spray for 8 hours (off for 3 seconds). Enhances ambient lighting to 7 colors, whose colors can rotate or change alternately. It offers you maximum relaxation. 【Super Quiet & Auto Shut-off】Our humidifier reduces noise to 35dB for quiet humidification without disturbing your study, work or sleep, far away from those unpleasant sounds; Perfect for light sleepers, kids and especially babies. And when water shortage occurs, it will automatically shut off to avoid damage and ensure your safety. And the