A. You can choose the free time, sleeping time, or working time that suits you. The built - in soft - colored LED lights can create a romantic atmosphere and help you sleep. B. You can set the air cooling fan to a single color, a seven - color cycling mode, or turn it off. C. This personal air cooler is easy to use and leak - proof. Just add water, connect the device, and turn on the switch. The large - capacity leak - proof water tank can prevent water from leaking out. D. This air cooler is suitable for rooms, offices, travel, and camping scenarios. As it is for personal use, it is recommended to use this product in small spaces. E. Our small air conditioner is environmentally friendly and energy - efficient. With it, you can carry this mini air cooler and use it outdoors when the family goes on a vacation.