Easy to power and carry: DC powered and the size is 139 * 80 * 80 mm, no matter from home to office or car, it can be easily carried.Appropriate capacity and breathing light for seven colors: 280ml volume, 50ml/h spray volume. When you turn on the humidifier, the breathing light will automatically turn on. Press and hold the switch button for the first time (3s) to stop the color change. Long press the switch button for the second time (3s) to turn off the breathing light.Ultra-quiet design: Prevents dryness and chapped skin in the dry season without noise. Help you breathe easily and provide a quiet and comfortable sleeping environment.Safety protection of automatic shutdown: 4-hour automatic power-off protection. Make sure there is enough water before running.Important note: Please use 5V1A power supply. If it is lower than this power, it may not work properly.